(rut) noun
1. A sunken track worn by a wheel, as in a road; hence, a groove forming a path for anything.
2. A settled habit or course of procedure; routine.
—v.t. rut·ted, rut·ting To wear or make a rut or ruts in. [? Var. of ROUTE]

(rut) noun
1. The sexual excitement of various animals, especially deer; estrus; also, the period during which it lasts.
2. A roaring or uproar; especially, the noise made by a rutting stag.
—v. rut·ted, rut·ting v.i. To be in rut.
—v.t. Rare To unite with in copulation; cover. [<F <L rugitus a roaring, tumult <rugire roar]
—rut′ting adjective