Monster film (7)

I believe the answer is:

titanic

I believe this clue is a double definition.

'monster' is the first definition.
(thesaurus)

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

(Other definitions for titanic that I've seen before include "Huge - disaster struck this ship" , "Sinker" , "Huge, epic" , "Twenty one [SHIP]" , "Huge, like doomed liner that struck iceberg" .)

I've seen this clue in The Times.

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