1. (

• straighten ,
• unbend

) straighten up or out; make straight ;

2. (

• straighten ,
• straighten_out

) make straight ;

3. (

• straighten ,

) get up from a sitting or slouching position; "The students straightened when the teacher entered" ;

4. (

• tidy ,
• tidy_up ,
• clean_up ,
• neaten ,
• straighten ,
• straighten_out ,
• square_away

) put (things or places) in order; "Tidy up your room!" ;

5. (

• roll_out ,
• straighten ,

) straighten by unrolling; "roll out the big map" ;

6. (

• straighten ,

) make straight or straighter; "Straighten this post"; "straighten hair" ;