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say it: jam
jam is a verb and noun meaning "press tightly together or cram". It carries 11 recorded senses.
interfere with or prevent the reception of signals
“Jam the Voice of America”
“block the signals emitted by this station”
preserve of crushed fruit
informal terms for a difficult situation
“he got into a terrible fix”
“he made a muddle of his marriage”
a dense crowd of people
deliberate radiation or reflection of electromagnetic energy for the purpose of disrupting enemy use of electronic devices or systems
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 jam 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.