Derrick

n.	1.	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.
	2.	(Mining) The pyramidal structure or tower over a deep drill hole, such as that of an oil well (also called an oil derrick . Derrick crane a combination of the derrick and the crane, having facility for hoisting and also for swinging the load horizontally.

Noun	1.	derrick - a framework erected over an oil well to allow drill tubes to be raised and lowered
	2.	derrick - a simple crane having lifting tackle slung from a boom

To see derricks in your dream, symbolizes obstacles standing in your road towards success.antenna tower, barbican, belfry, bell tower, campanile, colossus, column, crab, crane, cupola, dome, erector, fire tower, forklift, gantry crane, hoist, hydraulic tailgate, jack, jackscrew, lantern, lever, lift, lifter, lighthouse, martello, martello tower, mast, minaret, monument, obelisk, observation tower, pagoda, pilaster, pillar, pinnacle, pole, pylon, pyramid, shaft, skyscraper, spire, standpipe, steeple, stupa, tackle, television mast, tope, tour, tower, turret, water tower, windlass, windmill tower