manteltree

or man·tle·tree

[ man-tl-tree ]
/ ˈmæn tlˌtri /

noun

a wooden or stone lintel over the opening of a fireplace.
a masonry arch used in place of such a lintel.

Origin of manteltree

late Middle English word dating back to 1425–75; see origin at mantel, tree

British Dictionary definitions for manteltree

manteltree

mantletree

/ (ˈmæntəlˌtriː) /

noun

a beam made of stone or wood that forms the lintel over a fireplace