1.NounA card used to aid rote memorization. One side of the card contains data of one kind, or a question, and the other side contains the associated response which one wants to memorize. For example, one side could contain an English word, and the other side the Spanish translation.
"Many people use flashcards to learn languages."
2.NounA solid-state digital memory storage format, commonly found on computers, digital cameras and cellphones.