- jambstone
- \\ˈ ̷ ̷ˌ ̷ ̷\ noun
: a stone set vertically at the edge of a window or door opening so that one of its faces forms a jamb or part of a jamb
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/jam"stohn'/, n. Masonry.a stone, or one of the stones, forming one jamb of an opening.[1815-25; JAMB1 + STONE]
Useful english dictionary. 2012.