GNU Collaborative International Dictionary of English

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Found one definition

1.       
   Derrick , n. [Orig., a gallows, from a hangman named Derrick. The name is of Dutch origin; D. Diederik, Dierryk, prop. meaning, chief of the people; cf. AS. peódric, E. Theodoric, G. Dietrich. See Dutch, and Rich.]
   A mast, spar, or tall frame, supported at the top by stays or guys, and usually pivoted at the base, with suitable tackle for hoisting heavy weights, such as stones in building.
   1913 Webster
   (Mining) The pyramidal structure or tower over a deep drill hole, such as that of an oil well (also called an oil derrick .
   Webster 1913 Suppl.
   +PJC
   Derrick crane, a combination of the derrick and the crane, having facility for hoisting and also for swinging the load horizontally.
   1913 Webster