- Crack cocaine is the freebase form of cocaine that can be smoked. It may also be termed rock, hard, iron, cavvy, base, or just crack. Manual of Adolescent Substance Abuse Treatment, Todd Wilk Estroff, M.D., 2001 (306 pages), pp. ...
- comparative form of base: more base
- (Base-ring) The raised moulding around the circumference of the breech of an artillery piece often inscribed with the maker's name and the date on which the gun was cast.