I.a petty thief, pilferer (cf. furax).
II. Transf.
A. A pointed, burning sore on the human body, a boil, furuncle, Cels. 5, 28, 8; Plin. 20, 13, 50, § 130.—
B. A germ or knob on a vine, so called from its shape, Col. 4, 22, 4; 4, 24, 5; Plin. 17, 22, 36, § 181.