pick up is a verb meaning "take and lift upward". It carries 16 recorded senses.
get in addition, as an increase
“The candidate picked up thousands of votes after his visit to the nursing home”
lift out or reflect from a background
“The scarf picks up the color of the skirt”
“His eyes picked up his smile”
fill with high spirits; fill with optimism
“Music can uplift your spirits”
improve significantly; go from bad to good
“Her performance in school picked up”
gain or regain energy
“I picked up after a nap”
Definitions, synonyms and semantic relations for pick up come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.