say it: DUHM-pur
dumper is a noun meaning "truck whose contents can be emptied without handling; the front end of the platform can be pneumatically raised so that the load is discharged by gravity". It carries one recorded sense.
truck whose contents can be emptied without handling; the front end of the platform can be pneumatically raised so that the load is discharged by gravity
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 dumper 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.