This Sanskrit root word literally means, "whale-swallower," via timi-, meaning whale, and -gila, meaning to swallow. It is a word used to describe a gigantic sea-creature, large enough to swallow whole whales in one bite.
This word is taken to be equivalent to the Biblical Leviathan, and Tannin. There are other versions in Arabic including a direct transcription.
I suggest that this name be chosen as the best-fit, most definite native name for the Cryptid category, and that the English equivalent is the translation, Whale-Eater. The suggested Latin name would be Cetiovore, which also means the same thing.