Moving Part of a Reciprocating Engine
This page is the CodyCross answer for the clue below from Cartography, Group 2265, Puzzle 2 (Continents).
Question
Moving Part of a Reciprocating Engine
Answer
PISTON
Word Meaning:
PISTON — (mechanics) A solid disk or cylinder that fits inside a hollow cylinder, and moves under pressure (as in an engine) or displaces fluid (as in a pump)
Definitions from Wiktionary.