To chalk up is to record a win or a total to somebody's credit. Chalk up another win, chalked up a century, chalk it up to experience.
Chalk it up to experience is the standard consolation after a loss, and it means writing something off rather than recording it. The image is a score kept on a board in chalk.
1phrasechalk upTo record a win or a total to somebody's credit.
“The team hopes to chalk up another win on Saturday.”
chalk up is a recording.
From keeping a score or a tally on a board in chalk.
Refers to recording information on a blackboard with chalk.
Etymology from Wiktionary, CC BY-SA
Practised in A Song of Ice and Fire