Meaning

noun a succession of notes forming a distinctive sequence

noun the property of producing accurately a note of a given pitch

noun the adjustment of a radio receiver or other circuit to a required frequency

originFrom Middle English tune, an unexplained variant of tone, from Old French ton, from Latin tonus, from Ancient Greek τόνος (tónos, “a tone”). Doublet of tone, ton, and tonus.

Etymology from Wiktionary, CC BY-SA 3.0