A mudpuppy. / The mature larva of an ambystomid salamander, particularly that of the tiger salamander (Ambystoma tigrinum). / An axolotl (Ambystoma mexicanum).

plural of blackball

(organic chemistry) The bicyclic sesquiterpene 4-isopropyl-1,6-dimethyl-1,2,3,4-tetrahydronaphthalene

plural of stinge