To grasp the essential meaning of what a person is saying, to understand a person's argument and point of view.
To agree with what a person says, to be persuaded by their arguments.
To understand the meaning of (a person); to comprehend.
To twitch;
To beat with twigs.
To tweak.
To realise something; to catch on; to recognize someone or something.
To observe slyly; also, to perceive; to discover.
A small thin branch of a tree or bush.