godan verb (-ku), transitive verb
suck on; cling to with the mouth; chew on
Describes sucking or mouthing something persistently, often with a sense of clinging or not letting go. The action is more intense or prolonged than a simple lick or suck.
赤ちゃんが指をしゃぶりついている。
The baby is sucking on its finger.
犬が骨をしゃぶりついて離
The dog is chewing on the bone and won't let go.