The appearance of non-gloss paint on an exterior surface due to chemical deterioration and removal by weather.(noun)
Present participle of chalk.(verb)
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Use "chalking" in a sentence
"If a cellular feature has some discernable function and if it seems to be beyond what is biologically reasonable to expect of chance, then with varying degrees of confidence we are justified in chalking it up to design."
"The Beavers (2-4, 1-2 Pac-10) forced seven turnovers in chalking up their first victory at Washington since 1985."
"Guess Mom doesnt like the idea of chalking up another year."