Plural of crossarm; multiple horizontal beams on utility poles that support electrical and telephone lines.
Simple plural of 'crossarm,' maintaining the compound structure. The term became standardized in electrical engineering vocabulary in the early 20th century.
Modern power lines require precise calculations for crossarm spacing—they have to hold massive weight while weathering storms, and engineers use physics that hasn't changed much since Edison's era!
Complete word intelligence in one call. Free tier — 50 lookups/day.