To resist assault or pressure.

(law) A business formed by one or more lawyers to engage in the practice of law.

(soccer) Collectively, the two Scottish football teams Rangers and Celtic, both based in Glasgow, which are the most successful teams in Scotland. They have a fierce and long-standing rivalry.

plural of firming agent

A company of swindlers who obtain goods on pretence of being established in business, and then decamp without payment to do the same elsewhere.

(theater, dated) Well prepared, having thoroughly memorized one's part.

Alternative spelling of interfirm

(computing) A kind of link within a file system having aspects of both hard links and soft links.

plural of firm link

group that participates in football hooliganism or other sports-related hooliganism