- Commerce. one of a certain number of days allowed by a charter party for loading or unloading a vessel without demurrage.
- Nautical. a day in which a vessel is delayed in port.
Origin of lay day
First recorded in 1835–45
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- commerce the number of days permitted for the loading or unloading of a ship without payment of demurrage
- nautical the time during which a ship is kept from sailing because of loading, bad weather, etc