Hemp can disorientate most lassies (5)

I believe the answer is:

sisal

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'hemp' is the definition.
(I've seen this before)

I don't understand how the rest of the clue works.

(Other definitions for sisal that I've seen before include "Type of fibre" , "Plant fibre used for making rope" , "Rope-fibre made from leaves of tropical plant" , "Plant fibre used for ropes" , "Plant producing rope" .)

I've seen this clue in the Evening Standard.

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