byplay

from WordNet (r) 3.0 (2006)

byplay
    n 1: incidental activity performed by an actor for dramatic
         effect; "his business with the cane was hilarious" [syn:
         {business}, {stage business}, {byplay}]

from The Collaborative International Dictionary of English v.0.48

Byplay \By"play\, n.
   Action carried on aside, and commonly in dumb show, while the
   main action proceeds.
   [1913 Webster]

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