e/Gravity roll

Information
has gloss	eng: In drumming, a gravity roll is performed by resting the shaft of the drumstick on the rim of the snare drum, while holding the butt. The hand is moved up and down, causing the head of the stick to strike the drum's head once per stroke and the shaft of the drumstick will strike the rim of the drum on the way down (similar to a seesaw). The spot on the drumstick is different for everyone, as this technique requires considerable forearm precision. It helps to press down fairly hard and also following a slow to fast to slow pattern in order to gain more control. Although its origin is unknown, this technique is believed to have been used by jazz drummers such as Buddy Rich in the past.
lexicalization	eng: gravity roll
instance of	(noun) a practical method or art applied to some particular task technique

Meaning
Italian
has gloss	ita: Il Gravity roll o freehand technique è una tecnica per batteria che consente di eseguire rulli in trentaduesimi a velocita metronomiche che possono superare 120 bpm al quarto utilizzando una sola mano.
lexicalization	ita: Gravity roll