The Collaborative International Dictionary
mamma's boy
mama's boy \mama's boy\ n. A boy excessively attached to his mother; a boy lacking the usual masculine interests; also spelled mamma's boy.
Syn: mother's boy.
WordNet
mamma's boy
n. a boy excessively attached to his mother; lacking normal masculine interests [syn: mother's boy, mama's boy]
Usage examples of "mamma's boy".
I had noticed him while we were playing with Cutts - a proper-looking mamma's boy with a pale, delicate face and white hands, who looked as though he'd be more at home handing cucumber sandwiches to Aunt Jane than pushing a cue.
He was an essentially gentle little boy, and consequently was known as a queer duck, a mamma's boy, and a 'fraid cat.