hive
n. countablen. a home for bees where they live and make honey. It can also describe a place where many people are moving around and working very hard.
n. an enclosed structure in which some species of honeybees live and raise their young; by extension, a place swarming with activity or industry.
The garden has a wooden hive for the bees.
By eight in the morning, the office becomes a hive of activity as everyone prepares for the meeting.
The old marketplace was a literal hive of commerce, with merchants shouting prices and porters weaving through the dense crowds with heavy crates.
From Middle English hyve, from Old English hȳf, from Proto-West Germanic hūfi, from Proto-Indo-European kuHp- (“water vessel”), from *kew- (“to bend, curve”). See also Dutch huif (“beehive”), Danish dialect huv (“ship’s hull”); also Latin cūpa (“tub, vat”), Ancient Greek κύπη (kúpē, “gap, hole”), κύπελλον (kúpellon, “beaker”), Sanskrit कूप (kū́pa, “cave”). Doublet of coupe, cup, and keeve. The computing term was chosen as an in-joke relating to bees; see https://web.archive.org/web/20150715222122/http://blogs.msdn.com/b/oldnewthing/archive/2003/08/08/54618.aspx.
Often used in the metaphorical phrase 'a hive of activity' to describe a busy environment.