In the English language, the device consisting of a grooved wheel designed to support a moving rope, cable, or belt is universally called a "pulley." Depending on the specialized trade or context, alternative English synonyms and terms are also employed. For example, in maritime sailing and rigging, a pulley encased within a wooden or metal frame is known as a "block" or "tackle block." In mechanical engineering and automotive design, individual flat or grooved pulley wheels are frequently referred to as "sheaves" (pronounced shivs). However, in everyday conversation, science textbooks, and general construction, the term "pulley" remains the standard and most widely recognized English word.
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