Here are all the definitions so far from everyones post so far
Bid: an invitation to join an organization
National Panhellenic Conference (NPC): the governing body of sororities in the United States and Canada composed of delegates from 26 recognized women’s social fraternities.
New Member: a member of an organization who has not yet been initiated.
Pan-Hellenic: the governing body of national, historically African-American sororities and fraternities
Post Office: times when potential new members will meet with Recruitment Counselors to accept invitations for the next round of parties.
Potential New Member (PNM): a prospective Greek member who is attending recruitment parties as a registered guest and has fulfilled all eligibility requirements.
Preference (Pref): the last invitational round in Formal/Structured Recruitment
Quota: the number of new members that may join each sorority based on the number of women accepting invitations to Invitational Round II divided by the number of sororities participating in Formal/Structured Recruitment.
Recruitment Counselor (Rho Chi, Rho Alpha): a Panhellenic representative who has completely deaffiliated from her sorority in order to assist potential new members by offering objective advise and support during the Formal/Structured Recruitment process.
Suicide (Interntional Single Preference): putting down only one sorority on your Formal/Structured Recruitment bid card
Ceiling: The maximum number of women a chapter can have, although it can go over this number by taking in up to quota in a formal rush pledge class.
No-frills: Formal rush system where costumes, elaborate foods, skits, etc. are forbidden at all or most rounds.
Cut: When a sorority either does not invite a woman back to further parties, or the rushee does not go back to a house she was invited to.
Legacy: Definitions vary slightly depending on the sorority, but generally a mother,daughter, neice, grand-daughter, step-whatever, etc. of an initiated sister/alumna.Sorority rules sometimes dictate she cannot be cut from the first round of parties; if she is cut, national HQ will generally inform the family member.
Snap bid: A sorority can bid on someone who was or was not on their list following after all PNM are placed from their bid list.
Cross cutting: happens during bid matching and isn't really cutting at all. What happens is that the PNM was not on the first bid list of any of her stated preferences and each of them reached quota prior to reaching her name of their second bid list. This results in the PNM not getting a bid thus the application of the term "cut".
Hot Boxing: Combination of two or more active members speaking with a Potential New Member for more than two minutes. Potential New Members may be introduced to alumnae to affiliate members, but are only allowed to have a conversation with active members.
Verbal Bid: Verbal bids may not be given at any time during the Recruitment process. A verbal bid is defined as a statement that makes a reference to you becoming a member of a particular chapter. A verbal bid also implies any further connections with the chapter, including future meetings during Recruitment.
Outside Contact: During Recruitment, undergraduate and alumnae sorority women are not permitted to contact Potential New Members. No telephone calls, letters, e-mails, or gifts may be offered personally or delivered. Contact with sorority women is only permitted during the scheduled Recruitment parties.
Seperation: At no time during Recruitment should you be seperated from your group. This includes being taken to a seperate room or scheduled area. If you are escorted to a room, the door must remain open at all times.
Free: One some campuses Juniors and Seniors who rush. They do not count towards quota.
Local: A social greek organization that is not part of the NPC, NPHC or NIC. Can be nation wide or just situated in certain areas of the country or state.
Roof: Generally if housing is available, the number of girls that can live in the house. HOWEVER, I have heard a school use it to mean the same as Ceiling/Total.
Types of Recruitment/Rushes
** (I'm not sure whether many campuses do a friend's rush and part of me doesnt think it's legal):
Formal Recruitment/Rush: Recruitment of potential new members that happens in the late summer/fall where all houses participate.
Informal Recruitment/Rush: A more casual/relaxed recruitment of potential new members by only select houses. On some campuses those are the houses that didnt meet quota.
Continuous Open Bidding (COB): Recruitment of potential new members throughout the term and/or school year, and doesnt involve any type of organized events.
Friend's Rush: Recruitment of sister's friends as potential new members and no one else. No necessary organization of events.
Dirty Rush: Promising a guaranteed bid to a potential new member before they go through the whole rush process. If someone presents you with this they are breaking a violation and the house will receive a infraction.
Mixers: The different events/parties that one attends at the houses during rush.
Sets: The consecutive days a PNM has rush. For example week one, rush days are on Friday and Saturday...this is First Sets. *Note* Rush days are different on every campus.
Silence/Hush Period: The point from which rush/recruitment starts until it ends, where no sisters in houses and PMN are allowed to speak about the details of rush/recruitment.
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As stated in the previous threads many of the defintions vary by organization and campus. Furthermore not all campuses acknowledge all these terms or the different rushes mentioned.