straight·en /ˈstretṇ/
 (vt.)弄直,使正確,整頓,清理,使改正(vi.)直起來,改正,好轉
 Straight·en, v. t. A variant of Straiten. [Obs. or R.]
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 Straight·en v. t. [imp. & p. p. Straighted p. pr. & vb. n. Straighting.]
 1. To make straight; to reduce from a crooked to a straight form.
 2. To make right or correct; to reduce to order; as, to straighten one's affairs; to straighten an account.
 To straighten one's face, to cease laughing or smiling, etc., and compose one's features.
 straighten
      v 1: straighten up or out; make straight [syn: unbend] [ant: bend]
      2: make straight [syn: straighten out]
      3: get up from a sitting or slouching position; "The students
         straightened when the teacher entered"
      4: put (things or places) in order; "Tidy up your room!" [syn:
         tidy, tidy up, clean up, neaten, straighten out,
          square away]
      5: straighten by unrolling; "roll out the big map" [syn: roll
         out]
      6: make straight or straighter; "Straighten this post";
         "straighten hair"