The most common and most likely answer to this crossword clue is the 7 letter word SYSTOLE
S
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More clues leading to the result SYSTOLE
- Bit of a pulse, so dancing with style
- Internal contraction due to extremely speedy boa?
- Second before day’s end took a heartbeat
- Society’s outsiders moved quietly in a heartbeat
- Pussycat’s heart lifted, detecting some heartbeat
- Gutless story took a heartbeat
- Sally loses heart, scarf and beat
- Outwardly silly neckwear causes pumping of the heart
- It contracts to continue one’s circulation
- Gutted, Sally made off with part of the beat
Buddy explains!

The straight part
We know that "pumping of the heart" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case pumping of the heart = systole.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SYSTOLE mean?
SYSTOLE noun- The rhythmic contraction of the heart, by which blood is driven through the arteries.
- A shortening of a naturally long vowel.