bull header
noun Masonry.
Also called bullnose header.
a brick having one of the edges across its width rounded for laying as a header in a sill or the like.
a brick laid on edge as a header, as in a rowlock.
Compare
bull stretcher.
Words nearby bull header
bull dyke,
bull fiddle,
bull float,
bull gear,
bull gun,
bull header,
bull in a china shop,
bull kelp,
bull market,
bull mastiff,
bull moose