From Longman Dictionary of Contemporary Englishriderrid‧er /ˈraɪdə $ -ər/ ●●○ noun [countable] 1 DSOsomeone who rides a horse, bicycle etc → cyclist a horse and rider2 TCNADDan extra or more detailed piece of information that is added to an official document and changes it slightly
Examples from the Corpus
rider• Hours later, the horse came back without a rider, its flanks bloodied.• One by one, other horses and riders followed.• Ralph Castaneda, a West exercise rider and friend of the owners, recommended his boss.• Many indeed will choose to remain free riders, benefiting from services and entitlements to which they contribute little, if anything.• The leading rider in this year's motorcycle championship is Wayne Rainey.• While a bill modeled on these lines stands a good chance of passage, partisan riders could kill it.• What might have happened if the rider and horse hadn't arrived, mercifully she never discovered.• During their seven-day marathon, the riders will call at nature reserves, country parks and sites where wildlife is under threat.• The rider states that paragraph 27 applies only to foreign imports.• The rider wasn't badly hurt, but his bicycle was all smashed- up.From Longman Business Dictionaryriderrid‧er /ˈraɪdə-ər/ noun [countable] LAW an extra part that is added to an official document, for example an insurance policy 