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.
Something that checks or restrains: High interest rates put a curb on spending. A chain or strap that passes under a horse's lower jaw and serves in conjunction with the bit to restrain the horse. A market, originally on a street or sidewalk, for trading securities that are not listed on a stock exchange. transitive verb. curbed, curbÂ·ing, curbs