A small thin branch of a tree or bush.
They used twigs and leaves as a base to start the fire.
To beat with twigs.
To realise something; to catch on; to recognize someone or something.
He hasn't twigged that we're planning a surprise party for him.
To understand the meaning of (a person); to comprehend.
Do you twig me?
To observe slyly; also, to perceive; to discover.
To twitch; to pull; to tweak.