Man or Woman, but more suited towards the female sex. A middle aged woman who has had ALOT of cock and has children to show as a result, thus showing a true mastering of the cock. Typically has had so much cock that the vagina and anus have merged as one orrifice as a result of wear.
The Yoda of the cock world.
'This woman in the pub is 47, she has had 4 husbands and 6 children by all different men, she is a true cock master'
Commonly misinterpreted to describe a homosexual. A 'cockmaster' is actually one who through much training, has mastered the art of seduction. A true 'cockmaster' will be promiscuous and seldom pleasure the same girl twice. Although he may leave broken hearts in his wake, the 'cockmaster' will have no regrets, will never apologise and never look back.
"Mate, did you see that stunner that Duncan shagged last night? He is such a cockmaster"