Low cape — button it around neck (6)
I believe the answer is:
smooch
'neck' is the definition.
(smooching is a kind of necking)
'low cape button it around' is the wordplay.
'low' becomes 'moo' ('moo' can be a synonym of 'low').
'cape' becomes 'c' (abbreviation used on maps).
'button it' becomes 'sh'.
'around' is an insertion indicator.
'moo'+'c'='mooc'
'mooc' inserted inside 'sh' is 'SMOOCH'.
(Other definitions for smooch that I've seen before include "Canoodle" , "neck" , "Kiss and cuddle (colloq.)" , "Snuggle" , "Dance slowly while in an embrace - kiss - pet" .)