A landing place outside Pinner (4)

I believe the answer is:

pier

I'm a little stuck... Click here to teach me more about this clue!

'a landing place' is the definition.
(pier is a kind of landing place)

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

Can you help me to learn more?

(Other definitions for pier that I've seen before include "Support member" , "Seaside platform" , "Platform out to sea" , "seaside building" , "Quay" .)

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