bullnose

[ bool-nohz ]

noun

1. Also Architecture.
   1. a rounded or obtuse exterior angle, as the corner made by two walls.
   2. a structural member, as a brick, used in forming such an angle.
2. Also called bullnose step. a step having semicircular or quadrantal ends.

Word History and Origins

Origin of bullnose¹

First recorded in 1835–45; bull ¹ + nose