warrior (esp. of military retainers of daimyos in the Edo period); samurai; (arch.) man in attendance (on a person of high standing); (arch.) retainer
samurai general (esp. during the Sengoku period)
Board of Retainers (Kamakura and Muromachi-period government office); samurai guard house (Heian and Kamakura periods)
mnemonic for remembering the months with fewer than 31 days (ni, shi, mu, ku, etc.)
Polyergus samurai (species of amazon ant)