xirma -xir-xi'a- gismu

x₁ is a horse/equine/[colt/mare/stallion/pony] of species/breed x₂.

(adjective:) x₁ is equine/equestrian. See also sufti, xasli, kumte.

In notes:

kumte: x₁ is a camel/llama/alpaca/vicuna/dromedary of species/breed x₂.
sufti: x₁ is a/the hoof [body-part] of x₂.
xasli: x₁ is a donkey/jackass of species/breed x₂.
braxirma: x₁=b₁ is a cart/dray/draft horse of breed x₂.
ri'erxi'a: x₁ is a hippopotamus of genus/species x₂.
sfumabru: x₁ is an ungulate of order/family/species x₂.
sriba'axi'a: x₁=xi₁=b₂ is a horse (genus “Equus”) with natural stripes x₂=d₁=b₁; x₁=xi₁ is a zebra (common English usage).
xirsoi: s₁ is a horse cavalryman of army s₂.
xiryre'u: r₁ is horse meat from species/breed r₂=xi₂.
enzebra: x₁ is a mountain zebra (Equus zebra).
glaupa: x₁ gallops
pavjima: x₁ is a unicorn of type/mythology x₂
xirkaba: x₁ is a horse (member of species Equus ferus caballus).