say it: jowst
joust is a noun and verb meaning "a combat between two mounted knights tilting against each other with blunted lances". It carries 2 recorded senses.
a combat between two mounted knights tilting against each other with blunted lances
joust against somebody in a tournament by fighting on horseback
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 joust 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.