trap door
hatch
window
digs, pad
scuttle
hatch, window, through (gloss)
(ux)
hatch (gloss)
(syn)
hatch, trapdoor, trap (gloss)
hatch, scuttle (gloss)
(uxi)
hatch, scuttle (gl)
door (gl)
slot (gl)
outlet, vent (gl)
wicket, window (gl)
drop (gl)
fence (gl)
(clipping of)