ROUGHNECK
bully, tough, hooligan, ruffian, roughneck, rowdy, yob, yobo, yobbo
(noun) a cruel and brutal fellow
Source: WordNet® 3.1
Etymology
Noun
roughneck (plural roughnecks)
(colloquial, chiefly, US) Someone with rough manners; a rowdy or uncouth person. [from 19th c.]
(colloquial, chiefly, US) An ironworker; a dirty or low-paid worker, a labourer. [from 20th c.]
(colloquial, chiefly, US) A labourer on an oil rig. [from 20th c.]
Verb
roughneck (third-person singular simple present roughnecks, present participle roughnecking, simple past and past participle roughnecked)
To work as a laborer on an oil rig
Source: Wiktionary