Meaning of “chart” - Learner’s Dictionary

chart

noun uk us /tʃɑːt/
INFORMATION [ C ]

B2 a drawing that shows information in a simple way, often using lines and curves to show amounts:

a sales chart
the charts

B2 an official list of the most popular songs each week:

This song entered the charts at number 8.
MAP [ C ]

a map of the sea or the sky

(Definition of “chart noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)