orlop

plural orlops

1. nauticalThe platform over the hold of a ship that makes up the fourth or lowest deck, hence in full called orlop deck, especially of a warship.

   1 more example

   VVhen you haue berthed or brought her [the ship] vp to the planks, vvhich are thoſe thicke timbers vvhich goeth fore and aft on each ſide, vvhereon doth lie the beames of the firſt Orlop, vvhich is the firſt floore to ſupport the plankes doth couer the Hovvle, thoſe are great croſſe timbers, that keepes the ſhip ſides aſunder, the maine beame is euer next the maine maſt, […]

   1627, Iohn Smith [i.e., John Smith], “How to Build a Ship with the Definitions of All the Principall Names of Euery Part of her Principall Timbers, also How They are Fixed One to Another, and the Reasons of Their Vse”, in A Sea Grammar, with the Plaine Exposition of Smiths Accidence for Young Sea-men, Enlarged. […], London: […] Iohn Haviland, →OCLC, page 5