v. t. [ 1st pref. un- + strain. ] To relieve from a strain; to relax. B. Jonson. [ 1913 Webster ]
a. [ Pref. un- not + strain. ]
a. (Geol.) Not stratified; -- applied to massive rocks, as granite, porphyry, etc., and also to deposits of loose material, as the glacial till, which occur in masses without layers or strata. [ 1913 Webster ]
n. Want of strength; weakness; feebleness. [ Obs. ] Wyclif. [ 1913 Webster ]
a. (Nat. Hist.) Nonstriated; unstriped. [ 1913 Webster ]
v. t. [ 1st pref. un- + string. ] [ 1913 Webster ]
a.