Definition from Wiktionary, the free dictionary
Alternative forms 
beefcake (plural beefcakes)
- Used other than as an idiom: see beef, cake.
- (informal, uncountable) Imagery of one or more muscular, well-built men.
- (informal, countable) Such a male, especially as seen as physically desirable.
- (attractive man): lady-killer
Related terms 
imagery of muscular men