1.
N-COUNT
（船舶上用的）吊杆式起货设备 A derrick is a machine that is used to move cargo on a ship by lifting it in the air.
2.
N-COUNT
(油井上方的)井架，钻塔 A derrick is a tower built over an oil well which is used to raise and lower the drill.
- Noun
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1. a framework erected over an oil well to allow drill tubes to be raised and lowered
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2. a simple crane having lifting tackle slung from a boom
- 1. Don't stay under the arm of a derrick!
- 不要在起重机的吊臂下！
来自《简明英汉词典》
