'Square-rigged' definitions:

Definition of 'square-rigged'

(from WordNet)
adjective
Rigged with square sails as the principal ones

Definition of 'Square-rigged'

From: GCIDE
  • Square-rigged \Square"-rigged`\ (skw[^a]r"r[i^]gd`), a. (Naut.) Having the sails extended upon yards suspended horizontally by the middle, as distinguished from fore-and-aft sails; thus, a ship and a brig are square-rigged vessels. [1913 Webster]