Flanch (?), n.; pl. Flanches (#). [Prov. E., a projection, OF. flanche flank. See Flank.]
1.
A flange.
[R.].
Her.
A bearing consisting of a segment of a circle encroaching on the field from the side.
⇒ Flanches are always in pairs. A pair of flanches is considered one of the subordinaries.
© Webster 1913.