Definitions
1.VerbTo make a solemn promise (to do something)."pledge allegiance to the flag"
2.VerbTo deposit something as a security; to pawn.
3.VerbTo give assurance of friendship by the act of drinking; to drink to one's health.
4.NounA solemn promise to do something.
5.NounA promise to abstain from drinking alcohol.
6.NounAn asset or person temporarily handed over to guarantee the fulfilment of something promised, under threat of permanent loss of the thing handed over; surety, security, hostage.
7.NounA bailment of personal property to secure payment of a debt without transfer of title.
The personal property so pledged, to be kept until the debt is paid.
8.NounThe personal property so pledged, to be kept until the debt is paid.
9.NounA person who has taken a pledge of allegiance to a college fraternity, but is not yet formally approved.
10.NounA drinking toast.