01 n. The irregular triangular space between the curve of an arch and the inclosing right angle; or the space between the outer moldings of two c…
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1.
The irregular triangular space between the curve of an arch and the inclosing right angle; or the space between the outer moldings of two contiguous arches and a horizontal line above them, or another arch above and inclosing them.(Arch.)
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2.
A narrow mat or passe partout for a picture.[Cant]