1. Adverb (fukushi)

   by return; (call or write back) without delay

   折り返し電話するよう伝えます。

2. Noun

   lapel; cuff; turn-up; flap

3. going back; returning; turn (marathon, swimming, etc.)

4. chorus; refrain

5. shuttle service

6. aliasing (in imaging)

7. Noun, Noun which may take the genitive case particle 'no'

   back-to-back; BTB

   Computing

8. Noun

   wrapping (text on computer screen); wrap

   Computing

Also written 折返し【おりかえし】orikaeshi