Someone, or something that is weak, meak, or perhaps wimpy. Someone who lacks confidence, and/or is shy.
He got shut down by that girl! That guy's meager.
I don't feel comfortable at this party. I'm going to meager on out of here.
I can only last about 1 minutes in bed before I blow my load. I feel so meager.
That guy's weak chin makes him look so meager.