- 1to put something down or stop using it synonym put down She laid the book down on the table. Both sides were urged to lay down their arms (= stop fighting).
- 2(formal) to stop doing a job, etc. to lay down your duties
- 3if you lay down a rule or a principle, you state officially that people must obey it or use it You can't lay down hard and fast rules. it is laid down that… It is laid down that all candidates must submit three copies of their dissertation.
- 4[usually passive] to produce something that is stored and gradually increases If you eat too much, the surplus is laid down as fat.