Talkative type drops good guide (5)

I believe the answer is:

usher

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'guide' is the definition.
(an usher guides people)

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

(Other definitions for usher that I've seen before include "Guide at wedding" , "One escorts people to seats" , "He shows people to their seats in theatre" , "Theatre attendant" , "Doorkeeper, escort" .)

I've seen this clue in The Irish Times.

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