elve

Obsolete form of elf.

Sir Olof, he rode out at early day, / And so came he unto an Elve-dance gay.

Is it the offspring of thoughtless animal spirits, or the elve of fancy continually flitting round the expected pleasure?

A rapidly expanding disk-shaped region of red luminosity in the ionosphere, lasting less than a thousandth of a second, which occurs high above energetic cloud-to-ground lightning of positive or negative polarity.

It is likely that the first elve was recorded with the Space Shuttle low-light camera.