say it: jamd
jammed is an adjective meaning "extremely crowed or filled to capacity". It carries one recorded sense.
extremely crowed or filled to capacity
“a suitcase jammed with dirty clothes”
“stands jam-packed with fans”
“a packed theater”
colloquialism
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 jammed 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.