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Related to chalk out: chalk it up to experience
1. To illustrate something, often a plan or concept, by literally drawing it in chalk. A noun or pronoun can be used between "chalk" and "out." The architect quickly chalked out her vision for the addition to our house, to gauge our initial reactions to it.
2. To explain something to someone. A noun or pronoun can be used between "chalk" and "out." I still don't understand your idea. Can you start over and chalk it all out for me?
chalk something out
1. Lit. to draw a picture of something in chalk, especially to illustrate a plan of some type. The coach chalked the play out so the players could understand what they were to do. Our team captain chalked out the play.
2. Fig. to explain something carefully to someone, as if one were talking about a chalk drawing. She chalked out the details of the plan over the phone.