ratchetlike
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boa — /boh euh/, n., pl. boas. 1. any of several nonvenomous, chiefly tropical constrictors of the family Boidae, having vestigial hind limbs at the base of the tail. 2. a scarf or stole of feathers, fur, or fabric. [1350 1400; ME < L: water adder] * * … Universalium