adj Having much distance from one terminating point on an object or an area to another terminating point (usually applies to horizontal dimensions; see Usage Notes below).
adj (informal) Having a long penis.
adj Having great duration.
adj Seeming to last a lot of time, due to being boring or tedious or tiring.
adj (Britain, dialect) Not short; tall.
adj (finance) Possessing or owning stocks, bonds, commodities, or other financial instruments with the aim of benefiting from an expected rise in their value.
adj (cricket) Of a fielding position, close to the boundary (or closer to the boundary than the equivalent short position).
adj Passing or landing ahead of or beyond the intended target or location, as weapons fire or landing aircraft.
adj (tennis, of a ball or a shot) Landing beyond the baseline, and therefore deemed to be out.
adj (gambling) Of betting odds, offering a very large return for a small wager.
adj Occurring or coming after an extended interval; distant in time; far away.
adj (African-American Vernacular, slang, of money) In great supply; abundant.
adj (slang, MLE, by extension) stupid; annoying; bullshit
adj (slang, MLE, by extension) serious; deadly.
n (linguistics) A long vowel.
n (prosody) A long syllable.
n (music) A note formerly used in music, one half the length of a large, twice that of a breve.
n (programming) A long integer variable, twice the size of an int, two or four times the size of a short, and half of a long long.
n (finance) An entity with a long position in an asset.
n (finance) An investor having a long position in a security.
n (finance) A long-term investment.
v (transitive, finance) To take a long position in.
adv (chiefly sports) Over a great distance in space.
adv For a particular duration.
adv For a lengthy duration (see usage notes).
v (intransitive) To await, aspire, desire greatly (something to occur or to be true).
adj (archaic) On account of, because of.
v (archaic) To be appropriate to, to pertain or belong to.
v (obsolete) To belong.
n A surname transferred from the nickname. Originally a nickname for a tall man.
n An unincorporated community in Columbia County, Washington, United States.
n A commune in Somme department, Hauts-de-France, France.
n (countable) A surname from Chinese.
n A county of Baoji, Shaanxi, China.
adj (slang, MLE) Clipping of taking a long time.
n (Oxbridge, dated) Clipping of long vacation (“summer vacation”). [(Oxbridge) The university break between the end of one academic year in June and the start of the next in October.]
n Abbreviation of longitude. [(geography) Angular distance measured west or east of the prime meridian.]