samurai on horseback; (medieval) knight
riding (on horseback); mounting (a horse)
cavalry; cavalryman; trooper
single horseman; wait for one tile to finish one's pair and one's hand; wait for half of one's pair with four melds completed
shooting on horseback; equestrian archery
carbine (short gun used by cavalry)
the shogun's eighty thousand guards, comprising hatamoto and lower-ranking vassals