Crossword Genius

Ignoring It, it's the best horror film (6)

Ross

I believe the answer is:

scream

'horror film' is the definition.
(1996 horror film)

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

(Other definitions for scream that I've seen before include "card" , "Utter a sudden loud cry" , "Make high shrill sound as from fear" , "Loud shrill cry" , "Piercing yell" .)

I've seen this clue in The Guardian.
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