jarhead 
noun US informal
A marine.A lot is made in many movies of the physical training and the technical training that they experience in boot camp but I really think boot camp is to turn you into a jarhead....
- I know what I meant, jarhead, I don't need the likes of you questioning my command of the language.
Origin
Early 20th century (originally US dialect, in the sense 'mule'): from jar1 + head. The word originally referred to members of the US army, on account of the mule mascot of the Army football teams.
- outstationed
- outstation movement
- outstay
- outstay one's welcome
- outstay (or overstay) one's welcome
- outsteam
- outstep
- outstill
- outstink
- outstrain
- outstreaming
- out-stress
- outstretch
- outstride
- outstrike
- outstrip
- outstroke
- outstroke rent
- outstryder
- outsucken
- outsuffer
- outswagger
- outswear
- outsweat
- outsweep