[W/K] :: Tumbling

  Tumble \Tum"ble\ (t[u^]m"b'l), v. i. [imp. & p. p. Tumbled
     (t[u^]m"b'ld); p. pr. & vb. n. Tumbling (t[u^]m"bl[i^]ng).]
     [OE. tumblen, AS. tumbian to turn heels over head, to dance
     violently; akin to D. tuimelen to fall, Sw. tumla, Dan.
     tumle, Icel. tumba; and cf. G. taumeln to reel, to stagger.]
     1. To roll over, or to and fro; to throw one's self about;
        as, a person in pain tumbles and tosses.
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     2. To roll down; to fall suddenly and violently; to be
        precipitated; as, to tumble from a scaffold.
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              He who tumbles from a tower surely has a greater
              blow than he who slides from a molehill. --South.
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     3. To play tricks by various movements and contortions of the
        body; to perform the feats of an acrobat. --Rowe.
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     To tumble home (Naut.), to incline inward, as the sides of
        a vessel, above the bends or extreme breadth; -- used esp.
        in the phrase tumbling home. Cf. Wall-sided.
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  Tumbling \Tum"bling\,
     a. & vb. n. from Tumble, v.
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     Tumbling barrel. Same as Rumble, n., 4.
  
     Tumbling bay, an overfall, or weir, in a canal.
        [1913 Webster] Tumbrel

  tumbling
       adj 1: moving in surges and billows and rolls; "billowing smoke
              from burning houses"; "the rolling fog"; "the rolling
              sea"; "the tumbling water of the rapids" [syn: billowing,
               rolling]
       2: pitching headlong with a rolling or twisting movement; "a
          violent tumbling fall"
       n : the gymnastic moves of an acrobat [syn: acrobatics]