{ , n. [ AS. ræcc; akin to Icel. rakki. ] (Zool.) A dog that pursued his prey by scent, as distinguished from the greyhound. [ Obs. ] [ 1913 Webster ]

‖n. [ NL., fr. Gr. "ra`chis backbone + 'a`lgos pain.] (Med.) A painful affection of the spine; especially, Pott's disease; also, formerly, lead colic. [1913 Webster]

a. [ See Rachis. ] (Anat. & Zool.) Of or pertaining to the rachis; spinal; vertebral. Same as Rhachidian. [ 1913 Webster ]

‖n. [ NL. ] (Bot.) Same as Rhachilla. [ 1913 Webster ]

a. (Zool.) Same as Rhachiodont. [ 1913 Webster ]

‖n.; pl. E. Rachises L. Rachides [ NL., fr. Gr. "ra`chis, -ios.] [Written also rhachis.] 1. (Anat.) The spine; the vertebral column. [1913 Webster]

2. (Bot. & Zool.) Same as Rhachis. [1913 Webster]

a. [ Cf. F. rachitique. See Rachitis. ] (Med.) Of or pertaining to rachitis; affected by rachitis; rickety. [ 1913 Webster ]

‖n. [ NL., fr. Gr. "rachi^tis (sc. nosos), fr. "ra`chis, -ios, the spine. ] [ Written also rhachitis. ] 1. (Med.) Literally, inflammation of the spine, but commonly applied to the rickets. See Rickets. [ 1913 Webster ]

2. (Bot.) A disease which produces abortion in the fruit or seeds. Henslow. [ 1913 Webster ]

n. [ F., fr. Gr. "ra`chis, -ios, the spine + te`mnein to cut.] A dissecting instrument for opening the spinal canal. [Written also rachiotome.] [1913 Webster]