a word; a unit of vocabulary; refers to lexical items or words to learn.
この単語の意味を辞書で調べてください。
Please look up the meaning of this word in the dictionary.
英単語を毎日少しずつ覚えると効果的だ。
It's effective to memorize English words little by little every day.
新聞には知らない単語がいくつかあった。
There were several words in the newspaper I didn't know.
単語を文で使って練習すると定着しやすい。
Practicing words by using them in sentences helps them stick.