nat a to rio us (nat at or i us)

[ natatorium (nā-ta-to'ri-um), n.; pl. natatori ums, natatoria (-umz, -ä). (LL., a place for swimming, = There is little doubt that the natatory Sirenian order was derived from it [ Amblypoda ] by a proce of degradation. E. D. Cope , Origin of the Fittest, p. 278. 2. Used in or adapted for swimming: as, nat a tory organs; natatory membranes. natch1 (nach), n. and v. A dialectal form of notch. Losh, man! ha'e mercy wi' your natch , Your bodkin 's bauld. Burns , To a Tailor. natch2 (nach), n. [Formerly also nache ; natica ), buttock, naticæ , nates , buttocks: see nates .] The buttocks or rump. [Obsolete or prov. Eng.] Width [of a cow] at the nache , 14 inches. Marshall. ( Latham .)