Definition of saint valentine in English English dictionary
{i} 3rd century Christian martyr in whose honor Valentine's Day was originally celebrated (according to church tradition St. Valentine is considered the patron saint of lovers)
February 14, celebrated in various American and European countries by the exchange of valentines or love tokens. Also called Valentine's Day. February 14th, when traditionally people send a valentine (=special card) to someone they love, often without saying who the card is from. They may also send flowers, especially red roses, or other presents as a sign of love