This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. One that rattles: a rattler of pots and pans.

n. A rattlesnake.

n. Informal A freight train.

n. A rattlesnake.

n. A freight train or, (chiefly UK), a decrepit passenger train.

n. Something which rattles.

n. One who, or that which, rattles.

n. One who rattles, or talks away without reflection or consideration; a giddy, noisy person.

n. Anything which causes a person to become rattled, as a smart or stunning blow.

n. A rattlesnake.

n. A big or bold lie.

n. Among cutlers, a special form of razor with a very thin blade, the faces of which are ground to an angle of fifteen degrees.

n. A tumbling-box used to test the cohesive strength of bricks. A number of bricks are placed with a quantity of cast-iron balls in the box and the box is revolved at a fixed speed. The amount of wear shown by the bricks is a test of their power to resist abrasion: essentially a ball-mill. See ball-grinder and tumbling-box.

n. Something that is very good of its kind, as a horse.

n. A hard, brittle coal, like jet, which generally lies on top of seams.

n. a railroad train consisting of freight cars

n. pit viper with horny segments at the end of the tail that rattle when shaken

"Although some controllers like such schedules because they effectively give workers a three-day weekend, controllers say they are known as the "rattler" because of the way they disturb normal sleep patterns."

flue-rattler    diamond rattler   

tattler   

platz    rattlesnake    carbide    Richardson    jocko