FIRM (3)

firm (3). Firm, n. the name or names under which the business of any house is carried on or settled

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Firm, v. t. [[OE. fermen to make firm, F. fermer, fr. L. firmare to make firm. See Firm, a.]] 1. 1. To fix; to settle; to confirm; to establish.
And Jove has firmed it with an awful nod. Dryden. 2. 2. To fix or direct with firmness.
He on his card and compass firms his eye. Spenser.