'companionway' definitions:

Definition of 'companionway'

(from WordNet)
noun
A stairway or ladder that leads from one deck to another on a ship

Definition of 'companionway'

From: GCIDE
  • companionway \companionway\ n.
  • 1. a stairway or ladder that leads from one deck to another on a ship. [WordNet 1.5]