Definition of "valentine" in English

noun

1. An expression of affection, especially romantic affection, usually in the form of greeting card, gift, or message given the object of one's affection, especially on February 14th.

   • Such an extravagant valentine was unexpected.

2. A person to whom a valentine is given or from whom it is received, especially on February 14th.

   • Won't you be my valentine?