the.com/cloud

means A visible mass of condensed water droplets or ice crystals suspended in the atmosphere — or, by extension, anything that hangs murkily overhead, from a swarm of gnats to your data stored on someone else's distant servers.

from From Old English 'clud,' which originally meant a mass of rock or a hill — think 'clod' and 'clot,' all sharing that sense of a heavy, lumpy mass. The leap from rock to sky came in the medieval period, when people apparently looked up at those bulging, billowing shapes and thought 'that looks like a great heap of something.' The older word for sky-cloud, 'sky' itself, originally just meant 'cloud,' so the two essentially swapped jobs over the centuries.