1 A small freshwater Eurasian fish of the carp family, which typically forms large shoals.
Phoxinus phoxinus, family Cyprinidae
1.1 Used in names of small freshwater fishes similar to the minnow, e.g. mudminnow, topminnow.
1.2 Fishing An artificial lure imitating a minnow.
2 A small or insignificant person or organization.
Late Middle English probably related to Dutch meun and German Münne, influenced by Anglo-Norman French menu ‘small, minnow’.
After a full day of enjoyable fishing, Bob’s net haul was the last, unused minnow in his bait bucket. He did not eat it.