/ ˈmɒnəgræm; NAmE ˈmɑːn-/ noun
two or more letters, usually the first letters of sb's names, that are combined in a design and marked on items of clothing, etc. that they own
► mono·grammed adjective :
a monogrammed handkerchief
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WORD ORIGIN
late 17th cent.: from French monogramme , from late Latin monogramma , from Greek .