school (of fish)

a fish whose popular appellation changes depending on its maturity

(literally) a boat-swallowing fish / (figuratively) a colossal fish / (figuratively) a larger-than-life character/individual

fish species eaten in place of another species

carnivorous fish

Reeves' shad

one day, 24 hours / the daytime, the period from dawn until dusk / (figuratively) a short period of time / one day, someday, an unspecified day / the first day of the month

(literally) one side / everywhere, all around, the whole area / one viewpoint, one opinion or way of thinking / the front page of a newspaper

for the time being, for the present

the basics, a general idea