Ma"cle (?), n. [L. macula a spot: cf. F. macle. Cf. Mackle, Mascle.] Min. (a)
Chiastolite; -- so called from the tessellated appearance of a cross section. See Chiastolite.
(b)
A crystal having a similar tessellated appearance.
(c)
A twin crystal.
© Webster 1913.