Crossword Genius

Can you iron it like lightning? (5)

Ross

I believe the answer is:

sheet

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'lightning?' is the definition.
(sheet lightning is a kind of lightning)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for sheet that I've seen before include "Item of bedlinen" , "leaf" , "Piece of paper or bedlinen" , "Single piece of paper" , "It usually gets blanket coverage" .)

I've seen this clue in the Evening Standard.
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