Muscular Organ That Is Part of the Urinary System
This page is the CodyCross answer for the clue below from Circus, Group 86, Puzzle 1 (African Elephant).
Question is: Muscular Organ That Is Part of the Urinary System
and the answer is: BLADDER
Word Meaning:
BLADDER — (zoology) A flexible sac that can expand and contract and that holds liquids or gases.
Definitions from Wiktionary.