Endearing label designed to cover the centre of Dover (8)
'endearing' is the definition.
(I've seen this before)
'label designed to cover the centre of dover' is the wordplay.
'designed' indicates anagramming the letters (designed with the letters).
'to cover' is an insertion indicator.
'the centre of' says to take the centre.
The middle letters of 'dover' are 'ove'.
'label' with letters rearranged gives 'lable'.
'lable' enclosing 'ove' is 'LOVEABLE'.
(Another definition for loveable that I've seen is " Attractive, endearing".)
But I've got no explanation for this one! Could you help me understand?