Type of Line That's Not Wavy
This page is the CodyCross answer for the clue below from Physics, Group 1896, Puzzle 1 (Dorothy Vaughan).
Question is: Type of Line That's Not Wavy
and the answer is: STRAIGHT
Word Meaning:
STRAIGHT — Not crooked, curly, or bent; having a constant direction throughout its length.
Definitions from Wiktionary.