ALL meanings of preboard
pre·board
P p - verb with object preboard to put or allow to go aboard in advance of the usual time or before others: Passengers with disabilities will be preboarded. 1
- verb without object preboard to go aboard in advance. 1
- verb preboard to (allow to) board a plane before other passengers 0
- verb preboard to set the shape of (a garment, esp stockings) using heat, so that it will not lose its shape during washing 0