exclamation of triumph or approval, attested from c. 1992, perhaps originally U.S. military.
also noncom, by 1817, short for non-commissioned(officer).
The "non-coms" — non-commissioned, meaning, not non compos; though evil-minded high privates declare it might well mean that — have assigned to them an upper cabin, with staterooms, over the quarters of the officers, in the after-part of the ship. [James K. Hosmer, "The Color-Guard," Boston, 1864]
1812, "to arrange military vehicles in a park," from park (n.) in a limited sense of "enclosure for guns, wagons, horses, provisions, etc." (attested from 1680s). General non-military meaning "to put (a vehicle) in a certain place" is first recorded 1844. Related: Parked; parking. Park-and-ride is from 1966.
"of, pertaining to, or characterized by selection;" hence "using that which is choice," 1620s; see select (adj.) + -ive. Related: Selectively; selectivity; selectiveness. Selective service as a military drafting system is from 1917, American English; hence selectee "person chosen for military duty" (by 1940).
"a salient angle or part, a projection," especially as part of a military work, 1828, from salient (adj.).