English 'elm' derives from Old English 'elm,' from Proto-Germanic *elmaz, possibly related to a PIE root meaning 'red' or 'reddish-brown.'
A tall deciduous tree of the genus Ulmus, with rough serrated leaves and winged fruits, valued for its shade and timber.
From Old English 'elm' (elm tree), from Proto-Germanic *elmaz or *elmō, from a possible PIE root *h₁el- (red, reddish-brown), perhaps referring to the reddish-brown color of elm heartwood. Some linguists connect it to Latin 'ulmus' (elm), though the phonological correspondence is irregular and may suggest borrowing from a pre-Indo-European substrate language of Europe rather than direct inheritance. The elm was one of the defining trees of the northern European landscape, used for shipbuilding (its wood resists waterlogging), coffins, and water pipes in medieval cities
Elm wood's resistance to water made it the preferred material for water pipes in medieval and early modern London. Hollowed-out elm trunks served as London's water mains until iron pipes replaced them in the nineteenth century. When old London streets are excavated, elm pipe sections are still occasionally unearthed.