say it: FIN-i-shur
finisher is a noun meaning "(baseball) a relief pitcher who can protect a lead in the last inning or two of the game". It carries 6 recorded senses.
a race car that finishes a race
an animal that wins in a contest of speed
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 finisher 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.