Where an Irishman can change his hat at half time (5)
I believe the answer is:
meath
'where an irishman' is the definition.
The definition suggests a singular noun which matches the answer.
'change his hat at half time' is the wordplay.
'change' indicates anagramming the letters.
'hat' indicates taking the first letters (I've seen 'hats' mean this (in a down clue, the letter at the top of the word)).
'half' means to take half the letters.
The initial letter of 'his' is 'h'.
'time' cut in half is 'me'.
'h'+'at'+'me'='hatme'
'hatme' is an anagram of 'MEATH'.
'can' is the link.
Can you help me to learn more?
(Other definitions for meath that I've seen before include "lost province" , "Tara's county" , "Irish county of ancient kings, site of Tara" , "part of Ireland" , "County NW of Dublin" .)