... sense chiefly poetical. 4. The flowing of the tide; the semi-diurnal swell or rise of water in the ocean; opposed ... 1: fill quickly beyond capacity; as with a liquid; "the basement was inundated after the storm"; "The images flooded his mind ... syn: flood, oversupply, glut] 4: become filled to overflowing; "Our basement flooded during the heavy rains" Merriam Webster's I. noun ...