Lug (lŭg), n. [Sw. lugg the forelock.] 1. The ear, or its lobe.
2. That which projects like an ear, esp. that by which anything is supported, carried, or grasped, or to which a support is fastened; an ear; as, the lugs of a kettle; the lugs of a founder's flask; the lug (handle) of a jug.
3. (Mach.) A projecting piece to which anything, as a rod, is attached, or against which anything, as a wedge or key, bears, or through which a bolt passes, etc.
4. (Harness) The leather loop or ear by which a shaft is held up.
5. (Zoöl.) The lugworm.
Lug bolt(Mach.), a bolt terminating in a long, flat extension which takes the place of a head; a strap bolt.