Leapt around in coat (5)
I believe the answer is:
plate
'coat' is the definition.
(I know that plate is a type of coat)
'leapt around' is the wordplay.
'around' indicates an anagram.
'leapt' is an anagram of 'PLATE'.
'in' is the link.
(Other definitions for plate that I've seen before include "From which food is eaten or served" , "Illustration on special paper in a book" , "Flat dish; gold and silver ware" , "Thin sheet, as of glass" , "Salver" .)