Glazed bull’s-eye, 2; also called an oculus, oxeye window, or oeil-de-boeuf. 2. an aperture similar to 1., but unglazed; may be open or louvered. bull’s head
Bucranium. bull stretcher, bullnose stretcher 1. in masonry, a stretcher having a bullnose along the longest dimension for laying along an edge, as along a sill. 2. any stretcher which is laid on edge to show its broad face.