Postage payment indicator (5)
I believe the answer is:
stamp
(Other definitions for stamp that I've seen before include "Bring one's foot down" , "Seal" , "Official mark; bang (foot)" , "Impress; postage sticker" , "Philatelist's item" .)
I believe the answer is:
stamp
(Other definitions for stamp that I've seen before include "Bring one's foot down" , "Seal" , "Official mark; bang (foot)" , "Impress; postage sticker" , "Philatelist's item" .)