Tears regularly shed in Ireland for poets (4)

I believe the answer is:

erin

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

'ireland for poets' is the definition.
I can't judge whether this definition defines the answer.

'tears regularly shed in' is the wordplay.
'regularly shed' indicates alternate letters (letters shed at regular intervals).
The alternate letters of 'tears' are 'er'.
'er'+'in'='ERIN'

Can you help me to learn more?

(Other definitions for erin that I've seen before include "The Emerald Isle, in poetry" , "'Come back to ...' (emigrant song)" , "Old Ireland" , "Let ... Remember (song)" , "Ireland (poet.)" .)

I've seen this clue in The Sunday Times and The Times.

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