I am named after something that swings from the trees. When you have me, squeezing nuts is a breeze.

This clever riddle points to a common tool found in many workshops: the monkey wrench. The first part of the clue, "named after something that swings from the trees," refers to the "monkey" in its name. The second part, "when you have me, squeezing nuts is a breeze," directly describes the primary function of this tool, which is to grip and turn nuts and bolts, making mechanical tasks much easier.

The origin of the "monkey" in the wrench's name is a subject of some historical debate. While a popular but likely false story attributes its invention and naming to a mechanic named Charles Moncky in the mid-19th century, the term "monkey wrench" was actually in use earlier, dating back to the 1830s and 1840s. A more plausible theory suggests the name originated in Britain, where the tool's jaws were thought to resemble a monkey's face. Other theories, such as a connection to the term "grease monkey" for a mechanic, are chronologically incorrect as "grease monkey" appeared much later in the 1920s.

The monkey wrench itself is an early form of the adjustable wrench, which revolutionized mechanical work. Before its widespread adoption, workers often needed a separate fixed-size wrench for every different nut or bolt. The monkey wrench, a 19th-century American refinement of earlier English coach wrenches, allowed a single tool to adapt to various fastener sizes with its adjustable jaw, significantly streamlining repairs and construction. Though more modern adjustable wrenches have since evolved, the monkey wrench remains a recognizable and historically important tool.