1) Veer square-rigger sharply 
• (v. t.) To put (a vessel) on the other tack by veering her short round on her heel; -- so called from the circumstance of bracing the head yards abox (i. e., sharp aback, on the wind).
Box'haul` transitive verb [ imperfect & past participle Boxhauled ] (Nautical) To put (a vessel) on the other tack by veering her short round on her heel; -- so called from the circumstance of bracing the head yards abox (i. e., sharp aback, on the wind). Totten...
to put (a square-rigged sailing vessel) on a new tack by bracing the head yards aback and backing onto the new heading.