Sentence:  Many people use <WSD>flashcards</WSD> to learn languages. 
Meaning of the word marked with <WSD> tags:  (Q1820374) A 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.