G4438 πυκτέω (pyktéō)

KJV renderings: fight
Strong's definition: to box (with the fist), i.e. contend (as a boxer) at the games (figuratively)
Derivation: from a derivative of the same as G4435 (πυγμή);

From James Strong's public-domain dictionaries (G), JSON edition by OpenScriptures (CC-BY-SA). Every dotted-underline word in the text links here.