Term a bore devised for a measurer of pressure (9)
I believe the answer is:
barometer
'measurer of pressure' is the definition.
The definition suggests a singular noun which matches the answer.
'term a bore devised' is the wordplay.
'devised' indicates anagramming the letters.
'term'+'a'+'bore'='termabore'
'termabore' anagrammed gives 'BAROMETER'.
'for a' acts as a link.
Can you help me to learn more?
(Other definitions for barometer that I've seen before include "One showing pressure" , "Air-pressure measurer" , "Instrument to measure atmospheric pressure" , "Pressure gauge" , "Pressure indicator" .)