1
to work;to labor;to labour
彼は５時間以上もぶっ続けで働いた。
He worked more than five hours on end.
2
to function;to operate;to be effective;to work (i.e. ... works);to come into play
スイッチは時間通りに働かなかった。
The switch didn't work on time.
3
to commit (e.g. a crime);to perpetrate;to do;to act;to practise;to practice
4
to be conjugated