When they came within hailing distance, the seaman on watch called a challenge.

Out at the edge of the dragon farm, a sentry called a challenge.

He called the proposal "a challenge to the Police Department" to make its case.

A British sentry called a challenge, and then fired at the Americans.

A sergeant in the secondary trenches called a challenge that was more than half a yawn.

He'd got about halfway to the clearing when a soft, clear voice called a challenge: "Who goes?"

When a player calls a challenge, it is called against the player who most recently completed their move.

They made plans in low mutters, then almost had to scrap them at once when a sentry called a challenge from out of the darkness.

This is sometimes called a "challenge" or "provoked" heavy metals test.

Big Three officials called the proposal a challenge because they are struggling to meet the current requirements while expanding their truck sales.