(nautical) The line on the outside of a vessel indicating the depth to which it sinks in the water when loaded.

(linguistics) An isogloss used in the linguistics of the langues d'oïl. Dialects north of the line have preserved Vulgar Latin /k/ and /ɡ/ before /a/; dialects south of the line have palatalized /k/ and /ɡ/ before /a/.

a line, often invisible, which marks the boundary between two areas. / an imaginary line marking the difference between different things, ideals etc.

(typography) Synonym of slash ⟨/⟩.

(banking) A procedure whereby a central bank (usually the United States Federal Reserve) trades money with a foreign bank in one currency in exchange for an equivalent amount of money in the foreign bank's domestic currency, for the purpose alleviating a currency shortage.

(sports) The line separating the two halves of a pitch, either side of which the teams must stand before the beginning of the game.

plural of ship of the line

plural of line-dance

synonym of International Date Line

The layer of cream that floats to the top of a bottle of milk that has not been homogenized.