noun
splendid horse; fine steed
Literary or classical term for an excellent horse, often with a heroic or mythical nuance. Not used in everyday conversation.
彼は竜馬にまたがり、戦場へ向かった。
He mounted a splendid horse and headed for the battlefield.
noun
Shogi term: the piece obtained when a bishop (角行) is promoted. Moves like a bishop or a king.
See also: 角行 (かくぎょう)
角行を成ると竜馬になる。
When you promote a bishop, it becomes a promoted bishop.
角行 is the unpromoted bishop in shogi; 竜馬 is its promoted form.
From 竜 (dragon) + 馬 (horse), literally 'dragon horse'. The shogi sense is a metaphorical extension of the mythical creature.