cheval de bataille

[shuh-val duh ba-tah-yuh]

noun, plural che·vaux de ba·taille [shuh-vohduh ba-tah-yuh] /ʃə voʊdə baˈtɑ yə/. French.

a horse used in battle; charger.
a favorite topic of discussion, argument, etc.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019