say it: di-STROY-ur
destroyer is a noun meaning "a small fast lightly armored but heavily armed warship". It carries 2 recorded senses.
a small fast lightly armored but heavily armed warship
a person who destroys or ruins or lays waste to
“a destroyer of the environment”
“jealousy was his undoer”
“uprooters of gravestones”
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 destroyer 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.