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Use "hollo" in a sentence
"Shakespeare was the first to set down the ancestor word hollo, when he used it in his play Titus Andronicus: “Hollo, what storm is this?”"
"I was even whistling to myself as I loitered past the end of Hay Hill, and then my roving eye chanced to fall on a certain lighted window, and I bore up short, thinking hollo, what's this?"
"There was an edge to the soft voice, and I thought, hollo, is someone's piggy carcase aglow with jealous passion for our tiny poppet?"