a vertical passageway with ladders.
Origin of ladderway
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for ladderway
Historical Examples of ladderway
Perhaps this house contained the engineer's stateroom and that of his assistant, as well as a ladderway to the engine room.The Pioneer Steamship Savannah: A Study for a Scale Model
Howard I. Chapelle