• 1. a rotating tool that is inserted into a drilling machine or tool for boring cylindrical holes
• 2. a hand tool, either manually or electrically operated, for drilling holes
• 3. training in procedures or movements, as for ceremonial parades or the use of weapons
• 4. ( as modifier )
• 5. strict and often repetitious training or exercises used as a method of teaching
• 6. correct procedure or routine
• 7. a marine gastropod mollusc, Urosalpinx cinera, closely related to the whelk, that preys on...

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• 1. a machine for planting seeds in rows or depositing fertilizer
• 2. a small furrow in which seeds are sown
• 3. a row of seeds planted using a drill
• 4. to plant (seeds) by means of a drill
• 5. C18: of uncertain origin; compare German Rille furrow

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• 1. a hard-wearing twill-weave cotton cloth, used for uniforms, etc
• 2. C18: variant of German Drillich, from Latin tril i x, from tri- + l i cium thread

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• 1. an Old World monkey, Mandrillus leucophaeus, of W Africa, related to the mandrill but smaller and less brightly coloured
• 2. C17: from a West African word; compare mandrill

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