NUMBER 1

 Dictionary entry overview: What does number 1 mean? 

• NUMBER 1 (noun)
  The noun NUMBER 1 has 1 sense:

1. the first element in a countable series

  Familiarity information: NUMBER 1 used as a noun is very rare.

 Dictionary entry details 

• NUMBER 1 (noun)

Sense 1

Meaning:

The first element in a countable series

Classified under:

Nouns denoting quantities and units of measure

Synonyms:

first; number 1; number one

Context example:

the first of the month

Hypernyms ("number 1" is a kind of...):

no.; ordinal; ordinal number (the number designating place in an ordered sequence)

 Context examples 

Kurtzke Functional Systems Scores (KFSS) Record number 1 in small box when weakness (grade 3 or worse on pyramidal) interferes with testing.

(KFSS - Weakness Interferes With Testing, NCI Thesaurus)

Kurtzke Functional Systems Scores (KFSS) Record number 1 in small box for presence of temporal pallor.

(KFSS - Presence of Temporal Pallor, NCI Thesaurus)

"A" is often used to denote something or someone of a better or more prestigious quality or status: A, A+ or A*, the best grade that can be assigned by teachers for students' schoolwork; A grade for clean restaurants; A-List celebrities, etc. The number 1 is used in a similar way.

(A, The Titi Tudorancea Bulletin)