A name of the Great Sea in the earliest Lost Tales (LT1/85), a compound of haloisi “(stormy) sea” and velike “great”, as suggested by Christopher Tolkien (LT1A/Haloisi Velikë).
Early Quenya
haloisi
noun. the sea (in storm)
haloisi velike
place name. Great Sea
A word for “the sea (in storm)” in the Qenya Lexicon of the 1910s, a derivative of the root ᴱ√HALA with other derivatives having to do with leaping (QL/39). The word haloisi also appeared in the Poetic and Mythological Words of Eldarissa with the gloss “sea (aroused)” (PME/39).