Origins
The word 'willow' traces back to Old English 'welig,' which referred to trees and shrubs of the genus Salix.βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ The Old English form evolved through Middle English 'wilwe' and 'wilowe' into the modern 'willow,' with the final syllable broadening under the influence of the common '-ow' ending. The Proto-Germanic ancestor is reconstructed as *welΔ«gΕ, with cognates in Dutch 'wilg,' Old High German 'wΔ«da' (which became modern German 'Weide'), and possibly Old Norse 'vΓΓ°ir.'
The deeper etymology likely connects to PIE *wel- (to turn, roll, wind), which would make 'willow' literally the 'twisting tree' or 'bending tree' β an apt description of its long, supple branches. This same PIE root produced Latin 'volvere' (to roll, to turn), which gave English 'revolve,' 'involve,' 'evolve,' 'volume' (originally a rolled scroll), and 'voluble' (rolling speech, fluency). The connection between the willow and the concept of turning or winding is reinforced by the related words 'withe' and 'withy,' which refer to flexible willow twigs used for binding β essentially, the willow's branches used as cords.
The willow has been one of the most practically useful trees throughout human history. Willow branches β straight, light, and extremely flexible β are the primary material of basketry (wickerwork). The word 'wicker' may itself be related to a Scandinavian cognate of 'willow.' Willow was used for fish traps, fencing (wattle), furniture, and the frames of coracles and other light boats. In cricket, the bat is traditionally made of willow (specifically Salix alba var. caerulea, the cricket-bat willow), and the phrase 'the sound of leather on willow' is a cliched synecdoche for the game itself.
Latin Roots
The medicinal properties of willow bark have been known since antiquity. The Ebers Papyrus (c. 1550 BCE) records Egyptian use of willow for pain relief. Hippocrates prescribed willow bark tea for fever and pain around 400 BCE. The active compound, salicin, was isolated in 1828 by the German pharmacist Johann Buchner. In 1897, Felix Hoffmann at Bayer synthesized acetylsalicylic acid β a modified form of the compound β and the company marketed it as 'Aspirin' in 1899. The name 'salicin' derives from Latin 'salix' (willow), and the genus name Salix has been used in botany since Linnaeus. The willow is thus the etymological ancestor of one of the world's most widely used drugs.
In literature and symbolism, the willow is overwhelmingly associated with mourning, lost love, and grief. The 'weeping willow' (Salix babylonica), with its long pendulous branches, became the quintessential tree of sorrow. Shakespeare used the willow as a symbol of forsaken love: in Othello, Desdemona sings the 'Willow Song' before her death. In Hamlet, Ophelia drowns near a willow tree. The association was so strong that wearing a garland of willow became a conventional sign of mourning for a lost love.
The weeping willow's botanical name, Salix babylonica, was assigned by Linnaeus in reference to Psalm 137: 'By the rivers of Babylon, there we sat down, yea, we wept... We hanged our harps upon the willows.' However, the trees in the psalm were almost certainly poplars (Populus euphratica), not willows. The weeping willow is native to China, not Mesopotamia, and was introduced to Europe in the eighteenth century. The biblical association is thus a learned mistake β but one that reinforced the willow's symbolic connection to weeping and exile.