say it: FUUL-bak
fullback is a noun and verb meaning "(football) the running back who plays the fullback position on the offensive team". It carries 3 recorded senses.
(football) the running back who plays the fullback position on the offensive team
football
(American football) an offensive position in the backfield
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for fullback come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.