noun
The ordinary noun for a horse. It can refer to the animal generally, including horses used for riding, farming, racing, or kept at a ranch.
牧場で馬にえさをやった。
I fed a horse at the ranch.
彼女は小さいころから馬に乗っている。
She has been riding horses since she was little.
noun
horse racing; the horses
A colloquial shorthand for 競馬, especially in the context of betting or losing/winning money on races.
See also: 競馬
昨日は馬で大負けした。
I lost badly on the horses yesterday.
noun
Shogi term: 馬 is the common short form for 竜馬, the piece made when a bishop is promoted.
See also: 竜馬
将棋では、角が成ると馬になる。
In shogi, a bishop becomes a promoted bishop when it promotes.
noun
knight card
Specialized card-game term for a knight court card in mekuri karuta and unsun karuta; this is rare outside discussion of those traditional games.
うんすんカルタでは、馬は騎士に当たる絵札を指す。
In unsun karuta, 馬 refers to the picture card corresponding to a knight.