one

noun

1. NATO & ICAO radiotelephony clear code (spelling-alphabet name) for the digit 1.

symbol

1. ISO 639-3 language code for Oneida.

numeral

1. The number represented by the Arabic numeral 1; the numerical value equal to that cardinal number.

   “In some religions, there is more than one god.”

2. The first positive number in the set of natural numbers.

3. The cardinality of the smallest nonempty set.

4. The ordinality of an element which has no predecessor, usually called first or number one.

pronoun

1. One thing (among a group of others); one member of a group.

   “Any one of the boys.”

2. The first mentioned of two things or people, as opposed to the other.

   “She offered him an apple and an orange; he took (the) one and left the other.”

3. Any person (applying to people in general).

   “One’s guilt may trouble one, but it is best not to let oneself be troubled by things which cannot be changed. One shouldn’t be too quick to judge.”

noun

1. The digit or figure 1.

2. Used to briefly refer to a noun phrase understood by context A one-dollar bill.

   “I need some ones to make change.”

3. A one-dollar bill.

   “I need some ones to make change.”

4. One o'clock, either a.m. or p.m.