rail·ing /ˈrelɪŋ/
  扶手,欄干,抱怨
  Rail, v. t. [imp. & p. p. Railed p. pr. & vb. n. Railing.]
  1. To inclose with rails or a railing.
     It ought to be fenced in and railed.   --Ayliffe.
  2. To range in a line. [Obs.]
     They were brought to London all railed in ropes, like a team of horses in a cart.   --Bacon.
  Rail·ing, a. Expressing reproach; insulting.
     Angels, which are greater in power and might, bring not railing accusation against them.   --2 Pet. ii. 11.
  Rail·ing, n.
  1. A barrier made of a rail or of rails, together with vertical supports.  The typical railing in the interior of structures or on porches has a horizontal rail near waist height, and multiple vertical supports.  Its function is usually to provide a safety barrier at the edge of a verticle drop to prevent falls.
  2. Rails in general; also, material for making rails.
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  railing
       n 1: a barrier consisting of a horizontal bar and supports [syn:
            rail]
       2: material for making rails or rails collectively