__ Fin; Triangular Fin on a Shark's Back

This page is the CodyCross answer for the clue below from Concert Hall, Group 589, Puzzle 2 (Acoustic Design).

Question is: __ Fin; Triangular Fin on a Shark's Back

and the answer is: DORSAL

Word Meaning:

DORSAL — (anatomy, zootomy) With respect to, or concerning the side in which the backbone is located, or the analogous side of an invertebrate.

Definitions from Wiktionary.

__ fin; triangular fin on a shark's back — CodyCross Answer | CodyCross Solutions