This is the 10257th most frequent Catalan word.
pescar
To fish.
In this sentence, 'pescar' is used in its literal sense to describe the action of fishing as a hobby or activity.
M'agrada pescar al riu durant els caps de setmana.
I like fishing in the river during weekends.
Here, 'pescar' is used metaphorically to mean 'to catch' something undesirable, in this case, a cold.
Va pescar un refredat per no portar abric.
He caught a cold for not wearing a coat.
In this context, 'pescar' is figuratively employed to mean successfully figuring something out or obtaining it, often through effort or luck.