orlop Meaning, Definition & Usage

  1. noun the fourth or lowest deck
    fourth deck; orlop deck.

WordNet

Or"lop noun
Etymology
D. overloop the upper deck, lit., a running over or overflowing, fr. overloopen to run over. See Over, and Leap, and cf. Overloop.
Definitions
  1. (Naut.) The lowest deck of a vessel, esp. of a ship of war, consisting of a platform laid over the beams in the hold, on which the cables are coiled.

Webster 1913