"prisoner serving a life sentence," 1830, from life (n.).

"serving to correct the positions of the teeth," 1905, from orthodontia + -ic.

early 15c., palliatif, "serving to mitigate or alleviate" (a wound, disease, etc.); also "serving to cover, concealing;" from Medieval Latin palliativus "under cloak, covert," from Late Latin palliatus, literally "cloaked," from past participle of Late Latin palliare "cover with a cloak, conceal," from Latin pallium "a cloak" (see pall (n.)). Meaning "serving to extenuate by excuses or favorable representation" is by 1779. As a noun, "that which mitigates or extenuates," by 1724.

"working or acting for reward, serving only for gain," hence "resulting from sordid motives, ready to accept dishonorable gain," 1530s, from mercenary (n.), or in part from Latin mercenarius "hired, paid, serving for pay."

1640s, "serving to justify, tending to vindicate;" 1650s, "avenging," from vindicate + -ory.

"loose metal ball serving as the clapper of a sleigh-bell," 1875, diminutive of jingle (n.).

"small, slim, pert young girl," 1899, from French gamine, fem. of gamin.

"aid, assistance," late 13c., verbal noun from help (v.). Meaning "act of serving food" is from 1824; that of "a portion of food" is from 1883.

"serving to warn or notify beforehand," 1640s, from Late Latin praemonitorius, from praemonitor, agent noun from stem of praemonere "forewarn" (see premonition).

1802, French, literally "young girl," from jeune "young," from Latin juvenis (see young (adj.)).