He came up with a crackbrained idea to solve the problem.

I bought a pack of graham crackers for the camping trip.

I ordered two crab burgers for dinner.

The fifth cranial nerves are responsible for transmitting sensory information from the face to the brain.

I love to eat crack seeds.

The cranial nerves are responsible for transmitting sensory and motor information between the brain and the rest of the body.

Crab spiders are known for their ability to change color to match their surroundings.

The crake is a small bird found in wetlands.

Crap on a stick, that was a terrible movie!

The mud cracking on the ground was a sign of the drought.