Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!

Qenya 

erkasse

noun. holly

A noun appearing as ᴹQ. erkasse “holly” in The Etymologies of the 1930s, derived from the root ᴹ√ERÉK “thorn” (Ety/ERÉK). In a rejected page from the Quenya Verbal System of the 1940s, Tolkien had ᴹQ. erke “holly” derived from the same root (PE22/127). For purposes of Neo-Quenya, I’d stick to the (non-rejected) 1930s ercassë “holly”.

Conceptual Development: In the Qenya Lexicon and Poetic and Mythological Words of Eldarissa, Tolkien had ᴱQ. piosenna “holly”, a combination of ᴱQ. pio “berry” and ᴱQ. senna “red-brown” (QL/83; PME/83).

erke

noun. holly