[MysticCat]

In Phi Mu Alpha Sinfonia, "pledge" as a noun and "pledgemaster" are called "probationary member" (often shortened to "PM," "probate" or the like) and "Fraternity Education Office" ("FEO").

But "pledge" is still used as a verb -- one becomes a probationary member by pledging the Fraternity at a ceremony for pledging.