ppl. a. [UN-1 8: see BERTH v.2] Unboarded.
1589. in N. & Q., 9th Ser. X. 373/2. The church stool which is appointed for women to sit in, is very insufficient, being unbirthed and kept very fowle. Ibid. (1640), VII. 505/2. That many of the pews … are old, ruinous, unbirthed.
