O.N.O.


Meaning of O.N.O. in English

o.n.o. British English

(or near/nearest offer) used in advertisements to show that you are willing to sell something for slightly less money than you have said in the advertisement:

Bicycle for sale: £60 o.n.o.

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.