Early Quenya
karkara
adjective. toothed
karkaras
masculine name. Knife-fang
karkaras
noun. row of spikes or teeth
karkasse
noun. row of spikes or teeth
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!
A word appearing as ᴱQ. karkara “toothed” in the Qenya Lexicon of the 1910s, an adjectival form of ᴱQ. karka “fang, tooth” (QL/48).
Neo-Quenya: Since Q. carca “tooth” continued to appear in Tolkien’s later writings, I think ᴺQ. carcara “toothed” can be retained for purposes of Neo-Quenya.