Origins
The noun 'spring' in its hydrological sense — a natural source where water emerges from underground, a wellhead, a place where an aquifer meets the surface — is the most directly motivated of the several English words spelled 'spring.' It is literally a place where water springs: the noun derives directly from the verb, and the verb's meaning carries the etymology within it. To understand the water-spring is to understand the Germanic verb 'springan' and the Proto-Germanic concept of sudden upward or outward motion.
Old English 'springan' meant to leap, to burst forth, to rush out, to flow rapidly. The word applied to any sudden release of pent-up energy: a deer springing from cover, a fire springing up, a warrior springing to action. The water-source sense is attested from the Old English period itself — 'spring' or 'spryng' denoted a place where water bursts forth from the earth, exactly as a living creature springs from concealment. The metaphor is so apt that it scarcely registers as metaphorical: underground water builds pressure until it finds a path to the surface, and when it does, it rushes upward and outward. The geological reality matches the verb perfectly.
Proto-Germanic *springaną is the reconstructed ancestor, from which Old English 'springan,' Old Norse 'springa,' Old High German 'springan,' Old Saxon 'springan,' and Middle Dutch 'springhen' all descend. The word is consistently used for sudden, energetic motion across all the Germanic languages. The deeper PIE root is more debated: various scholars have proposed *sper- (to spread, scatter), *sprenǵh- (to move quickly, to rush), or a root related to the general idea of scattered or scattered motion. The difficulty is that the PIE reconstruction for the Germanic spring-family is not supported by clear cognates outside the Germanic branch, suggesting either that the word was a Germanic innovation or that its PIE ancestor left few survivors.
Figurative Development
The water-source sense gave English an enormous geographical vocabulary. 'Wellspring' (the source of a well or spring, and metaphorically the source of anything valuable) compounds the Norse loan 'well' with the Germanic 'spring' to describe the same phenomenon in two ways. Place names throughout England encode the word: Springfield (a field with a spring), Springwell, Springhead, and the many English towns and villages named for the springs that made them habitable. Hot Springs (Arkansas), Colorado Springs, and Springs (South Africa) all name settlements defined by their water sources. Even 'Spa,' though a different etymology, belongs to the same cultural context: a place where mineral springs were exploited for health.
The seasonal 'spring' and the mechanical 'spring' share the same verb origin. The season is named for the springing-up of plants — the moment in the agricultural year when dormant vegetation bursts upward from the earth, exactly as water bursts from a spring. Early English texts used 'spring of the year' or 'springtime' before the word stood alone for the season. The mechanical spring — a coiled elastic device that stores and releases energy — takes its name from the spring-like action of coiling and releasing, the same sudden release of energy that named the water source and the season.
All three noun senses (water source, season, mechanical device) thus share a single etymological point of origin: the Old English verb for sudden upward motion. This unity is not accidental or metaphorical coincidence — it reflects a coherent ancestral concept of energy suddenly released, whether from underground water pressure, from the stored chemical energy of plant growth, or from the mechanical tension of a bent metal strip.
Latin Roots
Culturally, springs held extraordinary significance in pre-Christian Germanic and Celtic religion. Sacred springs were understood as points of contact between the underground world and the surface world, sites where offerings could be made to deities associated with water. The Roman practice of dedicating springs to nymphs (as at Bath, ancient Aquae Sulis, dedicated to the goddess Sulis Minerva) overlaid earlier indigenous practice. Many English place names ending in '-well' or '-spring' preserve memories of these sacred sites: Holywell, Holwell, and dozens of others were springs venerated as holy before and after the Christianization of Britain. The spring as threshold — the place where what is hidden below the earth becomes visible above it — made it a natural focus for religious attention across cultures.