smoke bomb
smoke grenade

Someone set off a smoke grenade to indicate the direction and velocity of the wind.

Two minutes ago, a call came in ordering them to light their smoke grenades and wait for a package to be dropped.

How someone had set off a smoke grenade and all the bad guys escaped.

He was told to cover the withdrawal with a smoke grenade.

There were two things that looked like smoke grenades.

The body is practically the same as that of a smoke grenade.

Tearing out two smoke grenades and dropping them behind me.

Then one soldier hit upon a plan to fire a smoke grenade.

A few hours later, other soldiers threw more smoke grenades.

Frank told him about the boys' pursuit of the black sports car and the smoke grenade that had forced them off the road.