The compound "thousand-pound" is a modern English formation that transparently combines two ancient units of measure. "Thousand" originates from a Proto-Germanic root meaning "a great multitude," which evolved into the specific numerical value in Old English. "Pound" has a dual heritage, entering Old English from a Germanic term for a weight, itself borrowed from the Latin pondo, meaning "by weight." The logic of the compound is purely descriptive, directly linking the quantity "thousand" with the unit "pound" to create an adjective specifying an exact weight or monetary value. This follows a common Germanic pattern of forming compound modifiers, where the first element quantifies the second.

Structure: thousand (numerical value) + pound (unit of weight/currency) thousand: From Old English þūsend, of Germanic origin; related to Dutch duizend and German tausend. Functions as a numerical determiner. pound: From Old English pund, of Germanic origin; related to Dutch pond and German Pfund, from Latin pondo 'by weight'. Functions as a noun denoting a unit of weight or currency.