Lifter defending techniques? (5,3,6)

I believe the answer is:

block and tackle

'lifter' is the definition.
(device for lifting things)

I don't understand the remainder of the clue.

(Other definitions for block and tackle that I've seen before include "Lifting gear" , "How sportsmen defend" , "Rugby moves" , "weightlifter" , "lifting equipment" .)

I've seen this clue in The Times.

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