crack

To form cracks.

It's been so dry, the ground is starting to crack.

To break apart under force, stress, or pressure.

When I tried to stand on the chair, it cracked.

To become debilitated by psychological pressure.

Anyone would crack after being hounded like that.

To break down or yield, especially under interrogation or torture.

When we showed him the pictures of the murder scene, he cracked.

To make a cracking sound.

The bat cracked with authority and the ball went for six.

A thin and usually jagged space opened in a previously solid material.

A large crack had formed in the roadway.

A narrow opening.

We managed to squeeze through a crack in the rock wall.

Open the door a crack.

A sharply humorous comment; a wisecrack.

I didn't appreciate that crack about my hairstyle.

Crack cocaine, a potent, relatively cheap, addictive variety of cocaine; often a rock, usually smoked through a crack-pipe.

crack head

And even as a crack fiend, Mama / You always was a black queen, Mama

Crack cocaine, a potent, relatively cheap, addictive variety of cocaine; often a rock, usually smoked through a crack-pipe.

kitty crack

When did naming foods after a powerful narcotic become a thing?[…]Now the mean streets of New York are rife with “salted crack caramel” ice cream, “pistachio crack” brittle, “crack steak” sandwiches, and “tuna on crack.”

Highly trained and competent.

Even a crack team of investigators would have trouble solving this case.

Excellent, first-rate, superior, top-notch.

She's a crack shot with that rifle.

Every scratch in the scheme was a gnarled oak in the forest of difficulty, and I went on cutting them down, one after another, with such vigour, that in three or four months I was in a condition to make an experiment on one of our crack speakers in the Commons.