Mutagen vs Carcinogen Mutagen and carcinogen are two terms that have a lot in common. There is a potential that a single substance could be both of them at the same time and be only one of the two, as well.
A curb bit is a type of bit used for riding horses that uses lever action. It includes the pelham bit and the Weymouth curb along with the traditional curb bit used mainly by Western riders. Kimblewicks or Kimberwickes are modified curb bits, and a curb bit is used in a double bridle along with a bradoon.
1 The metal part on a curb bit that falls below the mouthpiece, which length controls the severity of the leverage action of the bit, and to which the reins of the bridle are attached. ( sports) A poorly played golf shot in which the ball is struck by the part of the club head that connects to the shaft.