The Collaborative International Dictionary of English v.0.48:

Squier \Squier\ (skw[imac]r), n.
   A square. See 1st Squire. [Obs.]
   [1913 Webster]

         Not the worst of the three but jumps twelve foot and a
         half by the squier.                      --Shak.
   [1913 Webster] Squierie