Noun
(slang) An ungainly, dull or stupid person; someone who is lazy, disrespectful and/or whose beliefs and philosophies clash with another.
(slang) A large, muscular, stupid man, especially an athlete.
Synonyms: brute, jock
Gary was a hulking meathead who, when he wasn't playing football, was either hunting, fishing or getting drunk and rowdy in some topless bar.
(military, slang, Canada) A member of the Canadian Forces Military Police.
Source: en.wiktionary.orgI learned how to get in shape without getting certain muscles too big that make you look like a meathead. Jason Dohring
I'm a meathead. I can't help it, man. You've got smart people and you've got dumb people. Keanu Reeves
Many sports, not just football, have kind of the macho meathead mentality where innovation is almost frowned upon. Lawrence Jackson
I'd just rather have a really sharp, interesting, smart gay son than some big dumb hetero meathead. Moby
Meathead guys ignore education to focus on ever-important athletics. Source: Internet
Reiner has stated, "I could win the Nobel Prize and they'd write 'Meathead wins the Nobel Prize'." citation For his performance, Reiner won two Emmy Awards in addition to three other nominations and five Golden Globe nominations. Source: Internet