Some flee Cheshire? They suck! (7)

I believe the answer is:

leeches

'they suck' is the definition.

'some flee cheshire?' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'LEECHES' can be found hidden inside 'flee cheshire'.

(Other definitions for leeches that I've seen before include "Bloodsucking parasites" , "Bloodsuckers" , "Blood-sucking worms once used by doctors" , "hangers-on" , "Physicians once" .)

I've seen this clue in The Independent.

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