Strip, taking pulse without reason (7)
I believe the answer is:
peanuts
'strip' is the definition.
(comic strip featuring Charlie Brown and Snoopy)
'pulse without reason' is the wordplay.
'pulse' becomes 'pea' (I've seen this before).
'without reason' becomes 'nuts' (I can't explain this - if you can you should give a lot more credence to this answer).
'pea'+'nuts'='PEANUTS'
'taking' acts as a link.
Can you help me to learn more?
(Other definitions for peanuts that I've seen before include "A derisory amount of money" , "Cartoon - giving a kind of butter" , "Popular edible seed pods" , "Little money" , "pittance" .)