Place in window for trumpet (6)

I believe the answer is:

splash

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'for trumpet' is the definition.
(both can mean to publish in a newspaper)

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

Can you help me to learn more?

(Other definitions for splash that I've seen before include "Sound of dive" , "Effect of body falling on water" , "Lead news story" , "Big media display -- bellyflop effect" , "Noise of a body falling into water" .)

I've seen this clue in The Independent and The Sun.

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