The usual Old English word for cloud was weolcan. In Middle English, skie also originally meant cloud. The four fundamental types of cloud classification (cirrus, cumulus, stratus, nimbus) were proposed by British amateur meteorologist Luke Howard (1772-1864) in 1802. Figuratively, as something that casts a shadow, from early 15c.; hence under a cloud (c.1500).
Thanks for the A2A. Okay, the most famous song in the world is no doubt 'Happy Birthday', followed by various Christmas carols (since the majority of human population is Christian indeed and since Santa is a really famous guy), folk songs, army marches and national anthems.
âUptown Funkâ by Mark Ronson Feat Bruno Mars was the most played song on Australian radio in 2015. AirCheckTM released the figures today showing âUptown Funkâ in the top spot with 20,234 spins and Walk the Moon with âShut Up and Danceâ in second place with Airplay of 18,637 times.