Why turkey has the same name as Turkey
c.1400, from Latin tinctura "act of dyeing or tingeing," from tinctus "dye," past participle of tingere "to tinge, dye, moisten, soak," from PIE root *teng- "to soak" (cf. Old High German dunkon "to soak," Greek tengein "to moisten"). Meaning "solution of medicine in a mixture of alcohol" is first recorded 1640s. The verb is recorded from 1610s.
tincture tinc·ture (tĭngk'chər)
A coloring or dyeing substance.
Abbr. tinct, tr An alcohol solution of a nonvolatile medicine.