mantis

/ˈmæntɪs/
noun
  1. A slender, green or brown insect that holds its front legs together as if praying, and eats other insects.
    • We saw a green mantis climbing up the fence in the garden.
    • A mantis sat perfectly still on the flower, waiting for a fly to come close.
    • The mantis turned its head to look directly at me, which was a little creepy.