Dictionary
pre•board
Pronunciation: (prē-bôrd', -bōrd'), [key]—
v.t.
to put or allow to go aboard in advance of the usual time or before others:
Handicapped passengers will be preboarded.
—
v.i.
to go aboard in advance.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.