One Orifice of a Sponge That Allows Ventilation
This page is the CodyCross answer for the clue below from Health and Fitness, Group 2127, Puzzle 3 (Squats and Lunges).
Question is: One Orifice of a Sponge That Allows Ventilation
and the answer is: OSCULUM
Word Meaning:
OSCULUM — (chiefly zoology) A small opening or orifice.
Definitions from Wiktionary.