Valentine (noun)

1. A card or message expressing love or affection, typically given or sent on Saint Valentine's Day (February 14th).
2. A person to whom one is romantically attracted or with whom one is in love.

Origin:

From the latin name "valentinus" which is the name of a christian martyr.

Examples:

1. She gave him a valentine card with a heartfelt message.
2. Valentines are traditionally exchanged on February 14th.
3. He made a valentine for his girlfriend.
4. Valentines can be given to friends, family or romantic partners.
5. Many people give chocolates, flowers or other gifts along with their valentines.