coleoptile

/kษ’liหหˆษ’ptษชl/

IPA: /K OW1 L IY1 AA0 P T AH0 L/

noun
  1. 1

    A pointed sheath that protects the emerging shoot in monocotyledons such as oats and grasses.

Source: https://en.wiktionary.org/wiki/coleoptile