NO.

 Dictionary entry overview: What does no. mean? 

• NO. (noun)
  The noun NO. has 1 sense:

1. the number designating place in an ordered sequence

  Familiarity information: NO. used as a noun is very rare.

 Dictionary entry details 

• NO. (noun)

Sense 1

Meaning:

The number designating place in an ordered sequence

Classified under:

Nouns denoting quantities and units of measure

Synonyms:

no.; ordinal; ordinal number

Hypernyms ("no." is a kind of...):

number (a concept of quantity involving zero and units)

Hyponyms (each of the following is a kind of "no."):

first; number 1; number one (the first element in a countable series)