Sentence:  At night, a cryptid known as the Grootslang is supposed to emerge from the cave and lure prey back into its lair. Shaped like a monstrous elephant with the tail of a snake, the <WSD>Grootslang</WSD> feeds on trespassers and fiercely guards a stash of thousands of diamonds and gemstones. The most popular story about the <WSD>Grootslang</WSD> comes from the escapades of British explorer Peter Grayson. In 1917, lured by the stories of diamonds in the Bottomless Pit, Grayson took a small team of men ... 
Meaning of the word marked with <WSD> tags:  (grootslang), referring to the specific primordial, one which is reputed to live in a cave in South Africa connected to the sea.