Emily Dickinson Lexicon

ROUND'HOUSE, n.

1. A constable's prison; the prison to secure persons taken up by the night-watch, till they can be examined by a magistrate. Encyc.
2. In a ship of war, a certain necessary near the head, for the use of particular officers.
3. In large merchantmen and ships of war, a cabin or apartment in the after part of the quarter-deck, having the poop for its roof; sometimes called the coach. It is the master's lodging room. Mar. Dict. Encyc.