As a noun ayu
is a sweetfish, an amphidromous fish of East Asia, the only member of its genus, species: Plecoglossus altivelis, named and prized for its sweet-tasting flesh. It is a game fish and is also subject to extensive aquaculture.
As an interjection ayup is
an alternative spelling of lang=en.
ayu
English
Noun
(en-noun)
A sweetfish, an amphidromous fish of East Asia, the only member of its genus, , named and prized for its sweet-tasting flesh. It is a game fish and is also subject to extensive aquaculture.
Synonyms
* ai