Fucker is defined as someone who has made another person upset or is disliked.
(noun)An example of a fucker is what you’d call someone who stole your girlfriend.
The definition of a fucker is vulgar slang for someone who has sex.
(noun)An example of a fucker is someone who has sexual intercourse with people.
See fucker in Webster's New World College Dictionary
noun
See fucker in American Heritage Dictionary 4
noun