The Adjustable One Was One Giant Step for Wrenches
Puzzle 3 of Tricky Spelling Pack
Question is: The Adjustable One Was One Giant Step for Wrenches
and the answer is: CRESCENT
Word Meaning:
CRESCENT — The figure of the moon as it appears between its first or last quarter and the new moon, with concave and convex edges terminating in points.
Definition source: Wiktionary (CC BY-SA 4.0)