This is the 2018th most frequent Catalan word.
trucar
"Trucar" means "to call" or "to phone" in English.
Here, 'trucar' is used in its meaning of 'to phone' or 'to call someone'.
Vaig trucar al meu amic per dir-li hola.
I called my friend to say hello.
In this sentence, 'trucar' refers to 'knocking,' as in knocking on a door.
Vaig trucar a la porta perquè em deixessin entrar.
I knocked on the door so they would let me in.
In this last example, 'trucar' again means 'to make a phone call.'