What is a synonym for blowing horn?

There isn't a perfect synonym for "blowing horn" because the phrase can have multiple meanings depending on context. Here are some options based on different interpretations:

If it refers to using a horn to make a sound:

* Sounding the horn

* Honking

* Tooting

* Blaring

* Trumpeting (for a trumpet)

If it refers to bragging or boasting:

* Show off

* Braggadocio

* Swagger

* Blow one's own trumpet

* Trumpet one's achievements

If it refers to a specific musical instrument:

* Playing the horn

* Performing on the horn

* Using the horn

To give you the best synonym, please provide more context about how "blowing horn" is being used.