/luy"euhn fish'/ , n. , pl. lionfishes , ( esp. collectively ) lionfish .
1. a brightly striped scorpionfish of the genus Pterois, esp. P. volitans, of the Indo-Pacific region, having long, flamboyant, venomous spiny fins.
2. an Atlantic scorpionfish, Scorpaena grandicornis.
[ 1905-10 LION + FISH ]