The most common and most likely answer to this crossword clue is the 5 letter word PULSE
P
U
L
S
E
More clues leading to the result PULSE
- Beat province's top university, one in capital
- Cry holding son giving sign of life
- Vitality plus unusual energy
- Heartthrob perhaps turning up at university
- Cry about small sign of life
- Beans give a sign of life
- Plant's biological rhythm
- Garden plant turned up at front of London school
- Stroke kitty, changing sides
- Seed perhaps mine, though not a tree, ultimately
Buddy explains!

The straight part
We know that "beat" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case beat = pulse.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 PULSE mean?
PULSE noun- A normally regular beat felt when arteries are depressed, caused by the pumping action of the heart.
- A beat or throb.
- The beat or tactus of a piece of music.
- An autosoliton
- To beat, to throb, to flash.
- To flow, particularly of blood.
- To emit in discrete quantities.
- To operate a blender in short bursts, to break down ingredients without liquidizing them.
- Any annual legume yielding from 1 to 12 grains or seeds within a pod, and used as food for humans or animals, especially in the mature, dry condition.