[ˈrʌɪdə], (Noun)

Definitions:
- a person who is riding or who can ride a horse, bicycle, motorcycle, etc.
(e.g: two riders approached the cottage)

- a condition or proviso added to something already agreed
(e.g: one rider to the deal—if the hurricane heads north, we run for shelter)

- a small weight positioned on the beam of a balance for fine adjustment


Phrases:

Origin:
late Old English rīdere ‘mounted warrior, knight’ (see ride, -er)