Simple past tense and past participle of gammon.(verb)
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Use "gammoned" in a sentence
"When Morris talks of a house that has been "gammoned," he deprives a large number of readers of his meaning."
""So could be I could tell people when they been gammoned?""
""Mr.. Tarrant is so good with the children, and Mr. Buford has charmed the lady guests-and gammoned them into thinking he's a specialist-doctor you brought in especially to see that they were all right.""