a part of a sentence that is not the subject or predicate (and can be omitted without making the sentence ungrammatical) such as 'with the red hair' in 'The boy with the red hair fell off his bike'

addition; help

something added to, joining to, forming a part of, a larger thing

limb; accessory

something added, especially at the end of a book

added material at end of document

something fixed in place, especially (pl) built-in cupboards etc which are bought with a building

fitting, appliance

a set of toothed wheels working together in a machine, e.g. to connect the engine of a vehicle with the road wheels

equipment

a right or adventure available only to a person, class or rank etc

right, due