Norwegian capital city, a name probably based on Old Norse os "estuary, river mouth," in reference to the place's situation.
"a small bone; small, hard, bone-like nodule," 1570s, from Latin ossiculum, diminutive of os "bone" (from PIE root *ost- "bone").
"to kiss (one another)," 1650s, from Latin osculatus, past participle of osculari "to kiss," from osculum "a kiss; pretty mouth, sweet mouth," literally "little mouth," diminutive of os "mouth" (see oral). Related: Osculated; osculating; osculant; osculatory.
"bony, made of bones," early 15c., ossuous, ossous, from Medieval Latin ossous, from Latin osseus "bony, of bone," from os (genitive ossis) "bone," from PIE root *ost- "bone." The word later was reformed in English (1680s), perhaps by influence of French osseux.
1713, intransitive, "to harden like bone, become bone;" 1721, intransitive, "convert to bone;" a back-formation from ossification, or else modeled on French ossifier (18c.) and formed from Latin os (genitive ossis) "bone" (from PIE root *ost- "bone") + -fy. Figurative sense "become rigid and fixed" (of thought, customs, etc.) is by 1858. Related: Ossified; ossifying.