Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
pugnātor, ōris, m. [pugno], a fighter, combatant (perh. not ante-Aug.), Liv. 24, 15; Suet. Caes. 39 fin.; Sil. 15, 598.
Appos.: Dominus quasi vir pugnator, Vulg. Exod. 15, 3; id. Josue, 17, 1.
Transf., adj.: gallus, a fighting-cock, Plin. 30, 15, 49, § 142.