Trample Something Until Thin and Horizontal
This page is the CodyCross answer for the clue below from The 1950s, Group 1814, Puzzle 2 (Vacuum Cleaners).
Question is: Trample Something Until Thin and Horizontal
and the answer is: FLATTEN
Word Meaning:
FLATTEN — (transitive) To make something flat or flatter.
Definitions from Wiktionary.