Meaning of DERRICK in English

n. 1 a kind of crane for moving or lifting heavy weights, having a movable pivoted arm. 2 the framework over an oil well or similar excavation, holding the drilling machinery.

[ obs. senses hangman, gallows, f. the name of a London hangman c.1600 ]

Concise Oxford English dictionary.      Краткий оксфордский словарь английского языка.