Wiktionary
sympathy card
n. A greeting card sent to family members of one who has died to express regret.
WordNet
sympathy card
n. a card expressing sympathy
Usage examples of "sympathy card".
The two women bought a stack of pinkish silver Mylar balloons and a sympathy card and placed them beside his bed.
I was in the process of wiping down the surface, moving aside the sugar bowl, the salt and pepper shakers, when I noticed the sympathy card Johnny Lee had sent.