Meaning

noun the periodic rise and fall of the sea level under the gravitational pull of the moon

verb rise or move forward

noun something that may increase or decrease (like the tides of the sea)

originInherited from Middle English tyde, from Old English tīd, from Proto-West Germanic *tīdi, from Proto-Germanic *tīdiz, from Proto-Indo-European *déh₂itis, from *deh₂y- +…

Etymology from Wiktionary, CC BY-SA 3.0