swordtail
nounA small, brightly colored, live-bearing freshwater fish (Xiphophorus hellerii) of Mexico and Central America, having a long tapering extension of the caudal fin in the male and popular in home aquariums.
nounA crustacean of the group Xiphosura, as the horseshoe- or king-crab. See cuts under
Any bug of the genus Uroxiphus, as U. caryæ, the walnut swordtail.
nounSame as
The limulus.
nounAny hemipterous insect of the genus Uroxiphus, found upon forest trees.
nounA species of
freshwater fish of Central America having a long swordlike tail; popular aquarium fish