A collection of blank pages of writing paper, bound together, often with a cardboard cover(noun)
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Use "writing pad" in a sentence
"One astonished admiral, a witness to this “extraordinary spectacle,” described the First Lord “perched up in a huge bed, and the whole of the bedspread littered with dispatch boxes, red and all colors, and a stenographer sitting at the foot — Mr. Churchill himself with an enormous Corona Corona in his mouth, a glass of warm water on the table by his side and a writing pad on his knee.”"