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English *noun*: venous sinus
1.	venous sinus (body) a wide channel containing blood; does not have the coating of an ordinary blood vessel
		Synonyms	sinus
		Broader (hypernym)	canal, channel, duct, epithelial duct
		Narrower (hyponym)	cavernous sinus, coronary sinus, sigmoid sinus, sinus cavernosus, sinus coronarius, sinus rectus, sinus sigmoideus, sinus transversus, straight sinus, tentorial sinus, transverse sinus