The Collaborative International Dictionary of English v.0.48:

Staddle \Stad"dle\ (st[a^]d"d'l), n. [AS. sta[eth]ol,
   sta[eth]ul, a foundation, firm seat; akin to E. stand.
   [root]163. See Stand, v. i.] [Formerly written stadle.]
   1. Anything which serves for support; a staff; a prop; a
      crutch; a cane.
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            His weak steps governing
            And aged limbs on cypress stadle stout. --Spenser.
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   2. The frame of a stack of hay or grain. [Eng.]
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   3. A row of dried or drying hay, etc. [Eng.]
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   4. A small tree of any kind, especially a forest tree.
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   Note: In America, trees are called staddles from the time
         that they are three or four years old till they are six
         or eight inches in diameter, or more. This is also the
         sense in which the word is used by Bacon and Tusser.
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The Collaborative International Dictionary of English v.0.48:

Staddle \Stad"dle\, v. t.
   1. To leave the staddles, or saplings, of, as a wood when it
      is cut. [R.] --Tusser.
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   2. To form into staddles, as hay. [Eng.]
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WordNet (r) 3.0 (2006):

staddle
    n 1: a base or platform on which hay or corn is stacked