No. 4,268 in Spanish
one
The Spanish word "one" does not exist; you may mean "uno," which means "one" in English.
In a sentence
Uno nunca sabe lo que puede pasar.
One never knows what can happen.
Here, 'uno' is used as an indefinite pronoun meaning 'one' in general.
Tengo un carro rojo.
I have a red car.
Here, 'un' is the masculine singular indefinite article meaning 'a' or 'one' (car).
Ella es una buena amiga.
She is a good friend.
Here, 'una' is the feminine singular indefinite article meaning 'a' or 'one' (good friend).
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