edge of blade

white; snowy; pure; bright; empty; blank; plain; clear; to make clear; in vain; gratuitous; free of charge; reactionary; anti-communist; funeral; to stare coldly; to write wrong character; to state; to explain; vernacular; spoken lines in opera

clear; obvious; unequivocal; sensible; reasonable; to understand; to realize

knife blade; crucial point

sharp blade

to edge a knife, scissor, sword etc.

double-edged blade

to kill with one's own hand