Definition of "laydown" in English

noun

(usually uncountable) The act of laying something down.
(publishing) A physical mockup or layout of a page design.
(military) A pattern of deployment.
(bridge) A hand which is so strong that the declarer can simply expose it and claim the number of tricks required by his or her contract.
(fishing) A tree fallen in water, where anglers might target fish.

adjective

Of packaging: designed to lie flat rather than stand upright.
Of (usually nuclear) bomb delivery: designed to land the bomb on the ground and wait for some time before detonation.