roll coal (English, verb)
expansion: roll coal (third-person singular simple present rolls coal, present participle rolling coal, simple past and past participle rolled coal)
Senses:
glosses: To emit sooty exhaust fumes from a modified (diesel) engine (fad among anti-environmentalist American truck drivers).
tags: US
slang
Forms:
form: rolls coal
tags: present
singular
third-person
form: rolling coal
tags: participle
present
form: rolled coal
tags: participle
past
form: rolled coal
tags: past