muscal,a.andn.|ˈmʌskəl| [ad.mod.L. Muscālēspl., f.musc-us moss: see -al1.] A.adj. in muscal alliance, a group of plants comprising the mosses. B.n. A plant of this ‘alliance’. 1846Lindley Veget. Kingd. 54 Muscales.—The Muscal Alliance.Ibid. 56 Natural Orders of Muscals.