Measure of Space Between Things
This page is the CodyCross answer for the clue below from Train Travel, Group 706, Puzzle 1 (Elbow and Legroom).
Question is: Measure of Space Between Things
and the answer is: DISTANCE
Word Meaning:
DISTANCE — An amount of space between points (often geographical points), usually (but not necessarily) measured along a straight line.
Definitions from Wiktionary.