E-L-H – ‘elevation, covering, protection; ascend, cause to ascend’

For the Hebraic word signifies neither a leaf, nor leaves, but a shadowy elevation, a veil; a canopy, a thing elevated above another to cover and protect it. It is also an elevation; an extension; a height. The root על develops all these ideas. (The Hebraic Tongue Restored, Fabré d’Olivet, p. 103)

5927. alah, aw-law´; a primitive root; to ascend, intransitively (be high) or actively (mount); used in a great variety of senses, primary and secondary, literal and figurative

5929. aleh, aw-leh´; from 5927; a leaf (as coming up on a tree); collectively, foliage:—branch, leaf.