adj.
  - with no distinctive features; normal or usual. ▸not interesting or exceptional. 
- (of a judge, archbishop, or bishop) exercising authority by virtue of office and not by deputation.
n.
 (pl. ordinaries)
      - Law,  Brit. a judge exercising authority by virtue of office and not by deputation.
- 
(the Ordinary)
 a clergyman, such as an archbishop in a province or a bishop in a diocese, with immediate jurisdiction.
- 
(Ordinary)
 those parts of a Roman Catholic service, especially the Mass, which do not vary from day to day. ▸a rule or book laying down the order of divine service. 
- Heraldry  any of the simplest principal charges used in coats of arms.
- archaic a meal provided at a fixed time and price at an inn.
- historical, chiefly N. Amer. a penny-farthing bicycle.
Phrase
  
    - in ordinary
 Brit. (in titles) by permanent appointment, especially to the royal household.
- out of the ordinary
 unusual.
 
  Derivative
  
    - ordinarily adv.
- ordinariness n.
 
  Etymology
  ME: the noun partly via OFr.; the adjective from L. ordinarius ‘orderly’, from ordo, ordin- ‘order’.