The semiquaver or sixteenth-note polska, typically played and danced in a smooth character and even rhythm.
From the en.wikipedia.org
The semiquaver is half of a quaver which is an eighth note.
From the en.wikipedia.org
The introduction allows ample time for soloist nerves but Rosemary was calmness itself as the downward semiquaver figures propelled her to her entry.
From the eadt.co.uk
Snoop is essentially rap's Sinatra, from his unassailable longevity right down to his way of hanging just a lazy semiquaver or two behind the beat.
From the independent.co.uk
Mendelssohn's characteristic soaring melodies and fizzy semiquaver flurries lift the mood, though three quartets in one sitting may leave you feeling aerated.
From the guardian.co.uk
More examples
Sixteenth note: a musical note having the time value of a sixteenth of a whole note
A sixteenth note, drawn as a crotchet with two tails