Soak in It
This page is the CodyCross answer for the clue below from Physics, Group 1886, Puzzle 1 (Thermal Conductivity).
Question is: Soak in It
and the answer is: HOTTUB
Word Meaning:
HOT TUB — (chiefly US) A large tub, often situated outdoors, filled with hot water and used for communal leisure bathing.
Definitions from Wiktionary.