I began to twitch all over.

What sort of twitch has he?

Haven't you seen anyone with a twitch?

A twitch or two and it's over.

A twitch in a thumb, a nerve or a muscle.

Well, I can't ask them all if they twitch, can I?

He was totally stoic. I couldn't see a twitch of his eyebrow.

They may get me, but one twitch on this trigger is all it takes.

Why not have the quick twitch muscle that will enable you to run faster and longer?

And we've come a long way since Galvani's and Susana's first successes in making animals twitch or jump.

And after about three months, the nerves grew in a little bit and we could get a twitch.

In fact, MG causes the motor neuron action potential to muscular twitch ratio to vary from the nonpathological one to one ratio.

And when I'm back in a real newsroom, I'll enjoy thinking about you... sitting here with an empty leash in your hands and nobody to twitch for you.

Instead, performance capture technology, originally invented for the movie Avatar, enables a human actor, Andy Serkis, to play the role of the chimpanzee Caesar, not by dressing in a chimp suit, but by having every gesture and facial movement, even the twitch of an eyebrow, transformed into the movement of an ape.