1. A school desk: This is the most common meaning, referring to the individual desk used by students in a classroom.
2. A lectern: This is less common, referring to the raised stand used by speakers or conductors to hold notes or a book.
The meaning will depend on the context.
Here are some examples:
* "Los alumnos se sentaron en sus pupitres." (The students sat at their desks.)
* "El maestro se puso detrás del pupitre." (The teacher stood behind the desk.)
* "El orador habló desde el pupitre." (The speaker spoke from the lectern.)