| derrick | (noun) a simple crane having lifting tackle slung from a boom | - |
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| (noun) a framework erected over an oil well to allow drill tubes to be raised and lowered | - |
| derriere | (noun) the fleshy part of the human body that you sit on | Synonyms: arse, ass, backside, behind, bottom, bum, buns, butt, buttocks, can, fanny, fundament, hind end, hindquarters, keister, nates, posterior, prat, rear, rear end, rump, seat, stern, tail, tail end, tooshie, tush |
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| derringer | (noun) a pocket pistol of large caliber with a short barrel | - |
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| derris | (noun) any of various usually woody vines of the genus Derris of tropical Asia whose roots yield the insecticide rotenone; several are sources of native fish and arrow poisons | - |
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| underrating | (noun) an estimation that is too low; an estimate that is less than the true or actual value | Synonyms: underestimate, underestimation, underreckoning |
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| underreckoning | (noun) an estimation that is too low; an estimate that is less than the true or actual value | Synonyms: underestimate, underestimation, underrating |
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