窆

to drill, to pierce

hollow, empty, deserted, bare

poor, destitute

cave, den, nest

cave, den, hole

sudden, abrupt, unexpected

window

to peep, to spy on, to watch

easy, convenient

to change, to transform, to alter

border, edge, margin, side

to knit, to weave

everywhere, all over, throughout

to argue, to dispute

flat

to recognize, to distinguish, to discriminate