The Collaborative International Dictionary
Lug \Lug\ (l[u^]g), n. [Sw. lugg the forelock.]
The ear, or its lobe. [Scot. & Prov. Eng.]
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.
(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.
(Harness) The leather loop or ear by which a shaft is held up.
(Zo["o]l.) The lugworm.
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A man; sometimes implying clumsiness. [slang]
Lug bolt (Mach.), a bolt terminating in a long, flat extension which takes the place of a head; a strap bolt.
Lug nut (Mach.), a large nut fitting a heavy bolt; -- used especially of the nuts used to attach wheels to vehicles.
Lug wrench (Mach.), a wrench used to tighten or loosen lug nuts, usually a steel rod having a hexagonally shaped socket which fits closely over the lug nut; sometimes in the shape of a cross, having several such sockets, one at the end of each arm, to accommodate nuts of different sizes.
WordNet
n. a wrench with jaws that have projecting lugs to engage the object that is to be rotated
Wikipedia
A lug wrench is the name for a type of socket wrench used to loosen and tighten lug nuts on automobile wheels. In the United Kingdom and Australia, this tool is commonly known as a wheel brace.
Lug wrenches may be L-shaped, or X-shaped. The form commonly found in car trunks is an L-shaped metal rod with a socket wrench on the bent end and a prying tip on the other end. The prying tip is mainly intended to remove hub caps or wheel covers that may be covering a wheel's lug nuts.
Another common type, sometimes called a spider wrench, is made in the shape of a cross with different sized sockets on each of the four ends.
Usage examples of "lug wrench".
Having seen the neck of the lug wrench snared in the loop of the knot, he had settled the mystery.
He also had Kelly's lug wrench literally tucked up his right sleeve.
Anyway, I knew where the lug wrench was and hoped the spare was in its cover on the outside of the trunk.
Dale had always noticed that fact but had never asked his dad why he carried the heavy lug wrench there.
The edge of his left hand cracked like a base--ball bat against the forehead of lug wrench, second from the left, and he dropped in a heap.
The guy had a Ford Fiesta up on the lift, whipping lug nuts off the right rear wheel with an air-driven lug wrench.
Carter, carrying a heavy lug wrench in one hand, was coming around the open door of the forward bomb elevator where red-vested ordies were jack-assing a rack of Mark 82 GPs onto a hand cart for transport to a flight of waiting Intruders.
The two brothers spun around to see Astro, stripped to the waist, a heavy lug wrench in his hand, legs spread apart, ready to spring.
Returning hurriedly to the car, her coat frosted with snow, her hair now hanging wetly across her shoulders and no longer dry enough to be blown about by the wind, she put the lug wrench in the trunk again and got back into the Ford.
I don't see the victims standing still while he traded the hammer for a shovel and the shovel for a lug wrench.
I didn't notice one wound that looked exactly like a hammer blow or like the mark from a crowbar or a lug wrench.