rid·er 
/ˈraɪdɚ/ noun
plural rid·ers /ˈraɪdɚ/ noun [count] 1 : a person who rides something
▪ a horseback rider ▪ Watch out for bike riders while driving. ▪ riders on the bus — see also dispatch rider 2 a : an official document that is attached to another document and that adds to or changes information in the original document
▪ She added a rider to her life insurance policy that increased her coverage.
b : an additional part added to a legislative bill
▪ Congress added a rider to the health insurance bill.
▪ a horseback rider ▪ Watch out for bike riders while driving. ▪ riders on the bus — see also dispatch rider
▪ She added a rider to her life insurance policy that increased her coverage.
b : an additional part added to a legislative bill
▪ Congress added a rider to the health insurance bill.
