Remain in Mulholland Drive? (4)

I believe the answer is:

last

'remain' is the definition.
(thesaurus)

I cannot understand how the rest of the clue works.

(Other definitions for last that I've seen before include "Least likely" , "model of repair" , "Cargo to stay fresh" , "Endure - this clue is!" , "Ultimate - endure" .)

I've seen this clue in The Guardian.

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