pulse

Pulse has 1 syllable.

noun. The rhythmic contraction and expansion of the arteries with each beat of the heart.

noun. The rate at which the heart beats; usually measured to obtain a quick evaluation of a person's health.

verb. Produce or modulate (as electromagnetic waves) in the form of short bursts or pulses or cause an apparatus to produce pulses.

verb. Expand and contract rhythmically; beat rhythmically.