Strap around thigh compressing artery walls (6)
I believe the answer is:
garter
'strap around thigh' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe you can see an association between them that I can't see?
'compressing artery walls' is the wordplay.
'GARTER' is hidden within the letters.
However, I am uncertain how the hidden word is indicated.
Can you help me to learn more?
(Other definitions for garter that I've seen before include "Band holding up sock" , "It holds a stocking up" , "Stocking supporter" , "Band around the leg or arm" , "Band worn on leg" .)