I
Elastic machine component able to deflect under load in a prescribed manner and to recover its initial shape when unloaded.
The combination of force and displacement in a deflected spring is energy , which may be stored when moving loads are being stopped or when the spring is wound up for use as a power source (e.g., in a watch ). Though most springs are mechanical, hydraulic (liquid) and air springs exist.
II
In hydrology, an opening at or near the Earth's surface where water from underground sources is discharged.
Springs discharge either at ground level or directly into the bed of a stream, lake, or sea. Water that emerges at the surface without a perceptible current is called a seep.
III
[c mediumvioletred] (as used in expressions)
hot spring
{{link=Prague Spring">Prague Spring
Spring and Autumn period
spring balance
spring peeper
Alice Springs
Colorado Springs
Hot Springs National Park
Palm Springs
sprung rhythm