monkey wrench

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monkey wrench

a wrench with adjustable jaws

monkey wrench

[′məŋ·kē ‚rench]
(design engineering)
A wrench having one jaw fixed and the other adjustable, both of which are perpendicular to a straight handle.

monkey wrench

monkey wrench
A wrench having one jaw fixed and the other jaw (which is adjusted by a screw) movable.
References in periodicals archive ?
But adding lithium to the system, say by taking a pill of lithium carbonate, is like throwing thousands of molecular monkey wrenches into the turning PtdIns cycles of each cell.
They were a small minority in the Republican Party, but they never stopped clamoring for change: constantly giving speeches, publishing their own newspapers, and throwing their monkey wrenches in the party's gear.
Throwing monkey wrenches into the competition seems to be drawing more teams, as evidenced in the rise in popularity of the Castaic race.