tomcat

Etymology

From Tom + cat, popularised by The Life and Adventures of a Cat (1760), by an anonymous author, in which the male cat was called Tom.

noun

1. A tom, an intact male cat.
2. (informal) A promiscuous man.

verb

1. (originally US, informal, of a man) To prowl for sexual gratification.
   He would not go roaming the streets tom-catting like Mr Schick. 1985, Peter Carey, Illywhacker, Faber and Faber, published 2003, page 539