|1.||a person or thing that rides, esp a person who rides a horse, a bicycle, or a motorcycle|
|2.||an additional clause, amendment, or stipulation added to a legal or other document, esp (in Britain) a legislative bill at its third reading|
|3.||(Brit) a statement made by a jury in addition to its verdict, such as a recommendation for mercy|
|4.||any of various objects or devices resting on, surmounting, or strengthening something else|
|5.||a small weight that can be slid along one arm of a chemical balance to make fine adjustments during weighing|
|6.||geology a thin seam, esp of coal or mineral ore, overlying a thicker seam|
A provision, usually controversial and unlikely to pass on its own merits, that is attached to a popular bill in the hopes that it will “ride” to passage on the back of the popular bill.