man·boob 
(mănbb′)
(mănbb′)n.
Slang
Slang
A male mammary gland that has become enlarged by the influence of estrogen or appears enlarged because of excess fat over the gland.
- underplay
- underplot
- underpopulated
- underpopulation
- underprice
- underprivileged
- underproduce
- underproduction
- underproof
- underprop
- underran
- underrate
- underreact
- underreaction
- underreport
- underrepresent
- underrepresentation
- underrepresented
- underrun
- under sail
- underscore
- undersea
- under seal
- undersecretariat
- undersecretary