Sheep low endlessly around Ireland? (6)
I believe the answer is:
merino
'sheep' is the definition.
(merino sheep is a kind of sheep)
'low endlessly around ireland?' is the wordplay.
'low' becomes 'moo' ('moo' can be a synonym of 'low').
'endlessly' means to remove the last letter.
'around' is an insertion indicator.
'ireland?' becomes 'erin'.
'moo' with its last letter taken away is 'mo'.
'mo' placed around 'erin' is 'MERINO'.
(Other definitions for merino that I've seen before include "Sheep with fine soft wool" , "Fine woollen yarn" , "Sheep from Spain with a heavy quality fleece" , "The sheep provides fine wool" , "Australian sheep" .)