- 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.
- [Mining] The pyramidal structure or tower over a deep drill hole, such as that of an oil well (also called an oil derrick .
Etymology: 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