3. (Mil.) One of the circular iron or steel rails on which the chassis
of a heavy gun is turned.
{ Rach, Rache (rch) }, n. [AS. ræcc; akin to Icel. rakki.] (Zoöl.) A
dog that pursued his prey by scent, as distinguished from the
greyhound. [Obs.]
||Ra`chi*al"gi*a (r`k*l"j*), 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.
Ra*chid"i*an (r*kd"*an), a. [See Rachis.] (Anat. & Zoöl.) Of or
pertaining to the rachis; spinal; vertebral. Same as Rhachidian.
||Ra*chil"la (r*kl"l), n. [NL.] (Bot.) Same as Rhachilla.
Ra"chi*o*dont (r"k**dnt), a. (Zoöl.) Same as Rhachiodont.
||Ra"chis (r"ks), n.; pl. E. Rachises (-z), L. Rachides (rk"*dz). [NL.,
||fr. Gr. "ra`chis, -ios.] [Written also rhachis.] 1. (Anat.) The
||spine; the vertebral column.