calling card, n.
a distinguishing characteristic or behavior
<noun.cognition>
calling card
sample sentences
"bombs are a terrorist's calling cards"
semantic pointers
hypernym
a printed or written greeting that is left to indicate that you have visited
<noun.communication>
calling card card visiting card
semantic pointers
hypernym
a card that is used instead of cash to make telephone calls
<noun.possession>
calling card phone card
semantic pointers
hypernym