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.
The definition of a curb is a concrete border that creates a gutter along a street. An example of curb is what someone has to step down from to step onto a street. Curb is defined as to control or hold back. An example of to curb is to drink lots of water before going to sleep after a night of drinking alcohol to control or avoid a hangover.