unˈberthed,ppl.a. [un-1 8: see berth v.2] Unboarded. 1589in 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.1640Ibid. VII. 505/2 That many of the pews..are old, ruinous, unbirthed.