The Fundamental Essence; the Very Basics

This page is the CodyCross answer for the clue below from Water Park, Group 741, Puzzle 3 (Wave Simulator).

Question is: The Fundamental Essence; the Very Basics

and the answer is: BAREBONES

Word Meaning:

BARE BONES — The essential elements of something; the minimum viable set of elements; especially when they are described without going into detail.

Definitions from Wiktionary.