calling card

from WordNet (r) 3.0 (2006)

calling card
    n 1: a card that is used instead of cash to make telephone calls
         [syn: {calling card}, {phone card}]
    2: a printed or written greeting that is left to indicate that
       you have visited [syn: {calling card}, {visiting card},
       {card}]
    3: a distinguishing characteristic or behavior; "bombs are a
       terrorist's calling cards"

from Moby Thesaurus II by Grady Ward, 1.0

19 Moby Thesaurus words for "calling card":
      ID card, badge, calligram, card, countermark, countersign,
      credentials, dog tag, identification, identification badge,
      identification tag, initials, letter of introduction, monogram,
      press card, serial number, signature, tessera, visiting card

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