chicken

A domesticated subspecies of red junglefowl (Gallus gallus domesticus).

backyard chickens

barnyard chickens

The meat from this bird eaten as food.

boneless chicken

tastes like chicken

The young of any bird; a chick.

There they are – four ugly little chickens, a bit more than half-feathered, and all gaping mouths and bare bellies.

A coward.

'Why, what a chicken you are! You are not afraid of being robbed; are you?' said Jonas.

Then he had an inspiration. "There is Roxton," said he. "He's not a chicken, but he is a useful man in a row. I think I could get him."

A young or inexperienced person.

Purſue your trade of ſcandal-picking, Your hints, that Stella is no chicken: Your innuendos, when you tell us, That Stella loves to talk with fellows; […]

"This case will make a stir, sir," he remarked. "It beats anything I have seen, and I am no chicken."

Cowardly.

Why do you refuse to fight? Huh, I guess you're just too chicken.

To avoid a situation one is afraid of.

For the umpteenth time, I chickened.

ABE: What are you chucking it for, then? You're running, aren't you? Running, cos you chickened. SLIM: All right, so I chickened.