Parking at home – that’s sharp (3)
I believe the answer is:
pin
'sharp' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'parking at home' is the wordplay.
'parking' becomes 'p' (abbreviation on road signs).
'at' means one lot of letters go next to another.
'home' becomes 'in' ('he's home' can mean 'he's in').
'p'+'in'='PIN'
'that's' acts as a link.
Can you help me to learn more?
(Other definitions for pin that I've seen before include "Fastener; brooch" , "Small brooch; skittle" , "Small pointed metal fastener" , "Flagged stick placed in golf hole" , "Needle" .)