Screw Top to a Petrol Tank
This page is the CodyCross answer for the clue below from Cruise Ship, Group 660, Puzzle 2 (Mediterranean).
Question is: Screw Top to a Petrol Tank
and the answer is: FILLERCAP
Word Meaning:
FILLER CAP — The cap that closes the opening of a tank, e.g. the fuel tank of a car, through which the tank can be filled.
Definitions from Wiktionary.