crack

US /kræk/
UK /kræk/
"crack" picture
1.

a line on the surface of something along which it has broken without dividing into separate parts

:
There's a small crack in the window.
The vase fell and developed a hairline crack.
2.

a sudden, sharp noise

:
We heard the loud crack of thunder.
The whip made a sharp crack in the air.
3.

a narrow opening or fissure, especially one in a rock or wall

:
The climber found a small crack to grip onto.
Light filtered through the cracks in the old barn wall.
1.

break or cause to break without complete separation of the parts

:
The ice began to crack under their weight.
He accidentally cracked the screen of his phone.
2.

make a sudden, sharp noise

:
The old floorboards cracked underfoot.
His knuckles cracked as he clenched his fist.
3.

find a solution to or an explanation for (a problem or mystery)

:
Scientists are trying to crack the code of DNA.
They finally cracked the case after months of investigation.
1.

excellent or very good

:
He's a crack shot with a rifle.
They have a crack team of engineers.