godan verb (-su), transitive verb
Transitive verb: to cause something to sway, rock, or shake gently. Often used for physical objects like a cradle, a branch, or a liquid.
母は赤ちゃんを揺らして寝かしつけた。
The mother rocked the baby to sleep.
風が木の
The wind is shaking the tree branches.
彼は試験管をそっと揺らして液体を混ぜた。
He gently shook the test tube to mix the liquid.