pick up

perceive with the senses quickly, suddenly, or momentarily

improve significantly; go from bad to good

buy casually or spontaneously

get in addition, as an increase

give a passenger or a hitchhiker a lift

lift out or reflect from a background

meet someone for sexual purposes

“he always tries to pick up girls in bars”

take up by hand

register (perceptual input)

“pick up a signal”

take into custody

take and lift upward