Internal Combustion __, Developed in the 1800s

This page is the CodyCross answer for the clue below from Architectural Styles, Group 1180, Puzzle 2 (Turning Torso).

Question is: Internal Combustion __, Developed in the 1800s

and the answer is: ENGINE

Word Meaning:

ENGINE — A large construction used in warfare, such as a battering ram, catapult etc.

Definitions from Wiktionary.

Internal combustion __, developed in the 1800s — CodyCross Answer | CodyCross Solutions