brevet (n.) Look up brevet at Dictionary.com
mid-14c., from Old French brievet "letter, note, piece of paper; papal indulgence" (13c.), diminutive of bref "letter, note" (see brief (adj.)). Army sense is from 1680s.
brevet (v.) Look up brevet at Dictionary.com
1839, from French breveter, from brevet (see brevet (n.)). Related: Breveted; breveting.