Meaning of NO in English

NO

n.

Function: adjective

Date: 12th century

1 a : not any < no parking> < no disputing the decision> b : hardly any : very little <finished in no time>

2 : not a : quite other than a <he's no expert>

3 ― used in combination with a noun to form a compound adjective <a no -nonsense realist>

Merriam Webster Collegiate English Dictionary.      Merriam Webster - Энциклопедический словарь английского языка.