1. A sweetheart chosen on Valentine's day; a love letter or caricature sent on that day. Valentine's-day, a day sacred to St. Valentine, February 14th.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• valantines,
• volentire,
• vallentines,
• valantine,
• valenteno,
• vatantine,
• valetting,
• valentimes,
• valintins,
• valintime,
• valientines,
• valintine,
• valentime,
• valetine,
• valintines,
• valentin,
• valintino,
• valenties,
• valentins,
• valentina

• Valentin,
• Valente,
• valiente,
• Valentino,
• valenta,
• Valentina,
• valenti.

The adjective form of the word "valentine" is "valentine's".

The plural of the "valentine" can be the "valentines".

The singular of the "valentine" can be the "valentine".