n2 preposition1 •(slang) Initialism of into.5'8" 135 lbs. gdlk coll. ed, indep but shy at bars, n2 music/audio, quiet nights, j/o ect. ^([sic]) — 1985
N2 noun1 •The rotational speed of the high-pressure spool of a two-spool gas turbine engine or the intermediate-pressure spool of a three-spool gas turbine engine, often expressed as a percentage of a certain reference rotational speed. formsN2s
