Sneaky shot when talking about Yeats' origins (5)

I believe the answer is:

sligo

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'sneaky shot' is the definition.
The definition suggests a singular noun which matches the answer.

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

Can you help me to learn more?

(Other definitions for sligo that I've seen before include "Irish county and town" , "Ir. town by Donegal bay" , "Yeat's county" , "area by the sea" , "County of NW Eire" .)

I've seen this clue in The Irish Times.

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