"Uno" is a numeral and can also function as a pronoun in Spanish.
/ˈuno/
In Spanish, "uno" primarily means "one." It is used to denote the first number in the counting sequence, representing a single unit. It is a commonly used word in both oral and written contexts.
As a numeral, it is frequently employed in counting, mathematical expressions, and everyday situations. Its frequency of use is quite high, as it is essential for basic communication and mathematics.
Tengo uno perro.
I have one dog.
Hay uno problema que debemos resolver.
There is one problem that we need to solve.
While "uno" itself is not as commonly a part of idiomatic expressions, it can appear in phrases that involve numbers or counting.
Ejemplo: Los jugadores salieron al escenario uno a uno.
The players came out on stage one by one.
De uno en uno
One at a time
Ejemplo: Recibiremos a los clientes de uno en uno.
We will receive the customers one at a time.
Uno mismo
One's self (implying self-care or self-reliance)
The word "uno" derives from the Latin "unus," which also means "one." This etymology is consistent across several Romance languages, reflecting its root in Latin numerals.
Overall, "uno" holds an essential role in language and communication, providing the ability to quantify and convey simplicity in expression.