cheval de frise

ponytail (hairstyle) / horsetail

horseshoe / horseshoe whip snake (Hemorrhois hippocrepis) / horseshoe bat (the monotypic family Rhinolophidae) / ironwort (Sideritis gen. and spp.) / horseshoe vetch (Hippocrepis gen. and spp.)

Trojan horse (a wooden horse used by the Greeks) / Trojan horse (malware)

rocking horse (a child’s toy consisting of a (usually wooden) horse mounted on a rocker or swing)

draft horse, draught horse

war-horse, battle-charger / hobbyhorse, favourite theme

(gymnastics) vault

led horse

plural of queue-de-cheval