What does «a través» mean in Spanish?

Indicates that something is in a transverse or crosswise manner; across, through, in a transverse direction.

Examples of use in Spanish: "Se acostó en la cama a través".
(a través de) That passes something from one side to the other; by between, by means of.

Examples of use in Spanish: "el sonido pasa a través de la pared".

"pasó su mano a través de la reja".
(a través de) Through.
(a través de) During, along.

Examples of use in Spanish: "Se mantuvo un clima cordial a través de la reunión" ❌ En este caso se sugiere usar "durante", "a lo largo", etc.