Definitions
1.nounA fish of the order Abdominales.
2.noun(usually plurale tantum) An abdominal muscle.
3.adjectiveOf or pertaining to the abdomen; ventral."abdominal cavity"
4.adjectiveHaving the ventral fins under the abdomen and behind the pectoral fins.
5.adjectiveVentral, in describing a fin.
6.adjectiveBelonging to the order Abdominales of fish.