E.g. Old Faithful
This page is the CodyCross answer for the clue below from Singapore, Group 2036, Puzzle 1 (Skyscrapers).
Question is: E.g. Old Faithful
and the answer is: GEYSER
Word Meaning:
GEYSER — (planetology, geology, volcanology) A boiling natural spring which throws forth jets of water, mud, etc., at frequent intervals, driven upwards by the expansive power of steam.
Definitions from Wiktionary.