Metal Animal Allusion Gives a Steam Loco Nickname

This page is the CodyCross answer for the clue below from Train Travel, Group 718, Puzzle 2 (Delays and Strikes).

Question is: Metal Animal Allusion Gives a Steam Loco Nickname

and the answer is: IRONHORSE

Word Meaning:

IRON HORSE — (transport) A railroad steam locomotive.

Definitions from Wiktionary.