STADDLE is a 7 letter word that starts with S.

1. \Stad"dle\, n. [AS. sta[eth]ol, sra[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.
   
            His weak steps governing And aged limbs on cypress
            stadle stout.                         --Spenser.
   
   2. The frame of a stack of hay or grain. [Eng.]
   
   3. A row of dried or drying hay, etc. [Eng.]
   
   4. A small tree of any kind, especially a forest tree.
   
   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.
   
   

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