rut /ˈrʌt/
  轍跡,凹槽,常規,慣例,發情期(vi.)交尾,發情(vt.)挖槽于
  rut /ˈrət/ 名詞
  發情,動情期,常規,慣例
  Rut n.
  1. Physiol. Sexual desire or oestrus of deer, cattle, and various other mammals; heat; also, the period during which the oestrus exists.
  2. Roaring, as of waves breaking upon the shore; rote. See Rote.
  Rut, v. i. [imp. & p. p. Rutted; p. pr. & vb. n. Rutting.] To have a strong sexual impulse at the reproductive period; -- said of deer, cattle, etc.
  Rut, v. t. To cover in copulation.
  Rut, n.  A track worn by a wheel or by habitual passage of anything; a groove in which anything runs. Also used figuratively.
  Rut, v. t. To make a rut or ruts in; -- chiefly used as a past participle or a participial adj.; as, a rutted road.
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  rut
       n 1: a groove or furrow (especially one in soft earth caused by
            wheels)
       2: a settled and monotonous routine that is hard to escape;
          "they fell into a conversational rut" [syn: groove]
       3: applies to nonhuman mammals: a state or period of heightened
          sexual arousal and activity [syn: estrus, oestrus, heat]
          [ant: anestrus]
       v 1: be in a state of sexual excitement; of male mammals
       2: hollow out in the form of a furrow or groove; "furrow soil"
          [syn: furrow, groove]
       [also: rutting, rutted]