\Coun"ter*lath`\, n. (Building)
(a) A batten laid lengthwise between two rafters to afford a
    bearing for laths laid crosswise.
(b) Any lath laid without actual measurement between two
    gauged laths.
(c) Any of a series of laths nailed to the timbers to raise
    the sheet lathing above their surface to afford a key for
    plastering.
(d) One of many laths used in preparing one side of a
    partition or framed wall, when the other side has been
    covered in and finished.