Experimental First Version of an Invention
This page is the CodyCross answer for the clue below from The 1950s, Group 1805, Puzzle 2 (Capri Pants).
Question is: Experimental First Version of an Invention
and the answer is: PROTOTYPE
Word Meaning:
PROTOTYPE — An original form or object which is a basis for other forms or objects (particularly manufactured items), or for its generalizations and models.
Definitions from Wiktionary.