definition of
[straighten]

[1] #1 straighten v. [unbend] straighten up or out; make straight. wn

[2] #2 straighten v. [straighten out] make straight. wn

[3] #3 straighten v. get up from a sitting or slouching position; "The students straightened when the teacher entered". wn

[4] #4 straighten v. [tidy, tidy up, clean up, neaten, straighten out, square away] put (things or places) in order; "Tidy up your room!". wn

[5] #5 straighten v. [roll out] straighten by unrolling; "roll out the big map". wn