This is the 11270th most frequent Catalan word.
traballant
"Traballant" means "working" in English.
Here, 'treballant' is the present participle of 'treballar', used to form a continuous tense in Catalan.
Estic treballant en un nou projecte.
I am working on a new project.
In this sentence, 'treballant' is used as a participle to indicate the action Joan was performing when seen.
Vaig veure en Joan treballant al jardí.
I saw Joan working in the garden.
Here, 'treballant' is used in a simile to describe the manner of studying diligently.