Meaning of “pick sth up” - Learner’s Dictionary

pick sth up

phrasal verb with pick uk us /pɪk/ verb [ T ]

to get something:

I picked up a leaflet on mortgages while I was at the bank.
She picked up some real bargains in the sale.

B2 to learn a new skill or language by practising it and not by being taught it:

He hadn't done any skiing before, but he picked it up really quickly.

to get an illness from someone or something:

She picked up a nasty stomach bug while she was on holiday.

If a piece of equipment picks up a signal, it receives it:

Antennas around the top of the ship picked up the radar signals.

to notice something:

Police dogs picked up the scent of the two men from clothes they had left behind.

(Definition of “pick sth up” from the Cambridge Learner’s Dictionary © Cambridge University Press)