Used other than figuratively or idiomatically: see out of, line. / (idiomatic) Inappropriate or unsuitable, especially by reason of being unmannerly or indelicate. / Not in a line, straggly.

the division between skin that has darkened or tanned from exposure to sun and skin that has not been exposed to sun

The final part of a joke; the word, sentence, or exchange of sentences that is intended to be funny and provokes laughter from the listeners.

A path that pedestrians or vehicles take informally rather than taking a sidewalk or set route, for example, a well-worn ribbon of dirt cutting across a patch of grass, or a path in the snow.

A long elastic cord tied around the ankles of the jumper in bungee jumping.

A type of commercial fishing using a very long line with many baited hooks attached along its length.

(countable, uncountable, business) The final balance; the amount of money or profit left after everything has been tallied. / (idiomatic) The summary or result; the most important information.

(nautical, military) A large square-rigged warship large enough to have a place in the line of battle, with up to 140 guns on at least two decks. A capital ship from the age of sail, superior to a frigate; usually, a seventy-four, or three-decker.

(baseball, softball) A batted ball hit hard enough and low enough that it appears to travel in a relatively straight line.

(cricket) The direction (line) and point at which a delivery hits the pitch (length) of a delivery considered as a whole, especially that of a group of a particular bowler's deliveries.