Pulsation of the Large, Vital Circulatory Muscle
This page is the CodyCross answer for the clue below from Popcorn Time, Group 384, Puzzle 3 (Stunt Coordinator).
Question is: Pulsation of the Large, Vital Circulatory Muscle
and the answer is: HEARTBEAT
Word Meaning:
HEARTBEAT — One pulsation of the heart; especially an irregular one, hence the emotion which causes it.
Definitions from Wiktionary.