Old World rabbit
— Noun
– English
~ common greyish-brown burrowing animal native to southern Europe and northern Africa but introduced elsewhere; widely domesticated and developed in various colors and for various needs; young are born naked and helpless
oligochaete worm
— Noun
– English
~ hermaphroditic terrestrial and aquatic annelids having bristles borne singly along the length of the body
open-end wrench
— Noun
– English
~ a wrench having parallel jaws at fixed separation (often on both ends of the handle)
Orville Wright
— Noun
– English
~ United States aviation pioneer who (with his brother Wilbur Wright) invented the airplane (1871-1948)
order Xiphosura
— Noun
– English
~ horseshoe crabs and extinct forms
order Xyridales
— Noun
– English
~ an order of monocotyledonous herbs