To Work
To Labor, To Commit
intransitive verb, godan verb
This word consists of kanji with hiragana attached. Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means work, and the verb version means to work, to labor, and sometimes to commit (a crime).
Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You didn't learn that reading with this kanji, so here's a mnemonic to help you: If you are as mad as a hatter you'll need to work very hard to regain your sanity. You know The Hatter from Alice in Wonderland? Imagine how hard he would have to work to be considered "normal".
アリは、よく働く虫だね。
Ants are very hard working bugs.
いつか日本で働きたいんです。
I want to work in Japan someday.
なんで休日も働かなきゃいけないの?
Why do I have to work on holidays?