Meanings
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1
verb
archaic or literary: to draw aside, open, or pull back a curtain, bolt, or covering
She rose to undraw the curtain and admit the morning light.
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2
verb
to erase, reverse, or remove something that has been drawn
The program can undraw the temporary outline without disturbing the image.
Thesaurus
Etymology
Formed from un-, marking reversal, + draw. Its older physical sense is 'draw aside or open'; a newer technical use means to erase or reverse a drawn graphic.