Meaning

noun the natural process by which the body repairs itself

verb heal or recover

verb get healthy again

originFrom Middle English heelinge, helynge, from Old English hǣling (“healing”), from Proto-Germanic *hailingō (“healing”), from Proto-Germanic *hailijaną (“to heal”), equivalent to heal + -ing. Cognate with West Frisian hieling (“healing”), Dutch heling (“healing”), German Heilung (“healing; cure”).

Etymology from Wiktionary, CC BY-SA 3.0