early 15c., restorour, in medicine (Chauliac), "one who resets a dislocation," from Old French restoreor, agent noun from restorer (see restore (v.)).
1670s, "soaking up, swallowing," present-participle adjective in a figurative sense from absorb (v.). Originally in medicine. Figurative sense of "engrossing" is by 1826. Related: Absorbingly.
spiced drink of hot milk and wine or liquor, mid-15c., of unknown origin. Formerly much in favor as a luxury and as medicine. Posset-cup is from c. 1600.
1739, in medicine, "to break, burst" (a vessel, etc.), from rupture (n.). The intransitive sense of "suffer a break" is by 1863. Related: Ruptured; rupturing. The old verb was rupt (Middle English rupten, in medicine, early 15c.), from Latin ruptus. Ruptured duck (1945) was U.S. GI's dismissive term (based on its design) for the discharge button they were awarded. Earlier it was used in a sense of "a damaged aircraft" (1930). Compare lame duck.
mid-15c., "food or medicine which restores health or strength," from restorative (adj.), or from Medieval Latin restaurativum "a restorative," noun use of the neuter of restorativus.