billet (v.)youdaoicibaDictYouDict[billet 词源字典]
1590s, "to assign quarters to," earlier, as a noun, "official record or register" (Middle English), from Anglo-French billette "list, schedule," diminutive of bille (see bill (n.1)) with -let. Related: Billeted; billeting.[billet etymology, billet origin, 英语词源]
billet (n.1)youdaoicibaDictYouDict
thick stick of wood, mid-15c., from Middle French billette, diminutive of bille "stick of wood" (see billiards).
billet (n.2)youdaoicibaDictYouDict
"document, note;" see billet-doux.