transitive. To open or unwrap the folds of; to spread open; to expand; to straighten out.

transitive. To make straight. Also: to align, put in a line with. Obsolete.

transitive. To straighten (a crooked object); spec. to make straight (a crooked, stiff, or crippled limb). Also with out. Obsolete.

transitive. To make straight, straighten out (anything crooked); to bring into line. In later use chiefly Medicine: to correct (a displaced limb…

transitive. To make straight, straighten. In later use chiefly Scottish, to straighten (a stream, a boundary), to lay out (a corpse).

transitive. To unbend, to straighten.

transitive. To make straight (what is bent or crooked); also with out. With up, to bring on to a straight or level course.

transitive and intransitive. To uncurve; to straighten.

(un-, prefix2 affix 1a.)

transitive. To take out of curl; to untwist.

transitive. To take out of a doubled or folded state; to straighten out.

transitive. To undo or free from being tucked up.

To cause to uncoil; to free from a coiled state.

To apply the same kind of action to alter curvature in any way, e.g. to straighten what is crooked.

To straighten from a bent or curved position; to unfold. Also reflexive.

To uncoil, straighten out.

transitive. To wind or unwind (a thread, line, etc.); (Geometry) to generate an evolute of (a curve). Also intransitive: (of a line or curve) to…

(See quot. 1859.)

transitive. To remove a kink or kinks from; to straighten or to stretch out (something previously bent or twisted). Also (and in earliest use) figur…

transitive. To remove kinks from.