gėlė

Etymology
Of uncertain origin. Perhaps from a lengthened vowel grade of the same root as, but this is semantically dubious due to the diversity of colors of flowers, as well as the exact derivational morphology being unclear. That said, the color yellow tends to evoke connotations of shining and blooming in various languages, as Buck notes, so the semantic connection is not too weak.

Noun

 * 1) flower a plant that bears flowers

Usage notes
and the less common refer to an entire plant, while  refers to just the part (the flower itself).