please forgive me for crashing your boards sisters of ZPhiB, but I did want to clarify somethings to someone who is naive of these things
ASKING ANY GLOS whether it's NPHC, NIC, NPC, NALFO, MCGLO, etc....about the meaing/symbolism of their crest is very impolite ... its privileged (i.e. ritual) information and you are not entitled to know it unless you are a member of said organization....it is an outward symbol (just like the badge/pin) of the scared teachings of the organization.
I commend you on wanting to join ZPhiB a very illustrious organization and I hope your journey to become one is successful.
As Intense1920 stated you should really contact a local chapter and volunteer your time to learn more about the organization.
MzSmith, I suggest you read this
thread here even though its not a ZPhiB thread is really is a good rule of thumb for ANY D9 organization.
ms. gwyn