wythe /waɪθ/ noun2 •A continuous vertical section of masonry, one unit in thickness.That wall has to be at least three wythes of brick to support your load. •A partition between flues in a chimney.A chimney runs from the base of the first flue liner to the top of the last flue liner, or to any rain cap above it. Attach single-wythe chimneys to the house. — 1986 formswythes
