Meaning

noun the act of directing the eyes toward something and perceiving it visually

noun the act of searching visually

verb perceive with attention; direct one's gaze towards

originFrom Middle English lokynge, from earlier lokinde, lokende, from Old English lōciende, present participle of Old English lōcian (“to look”), equivalent to look + -ing.

Etymology from Wiktionary, CC BY-SA 3.0