animal, animate being, beast, creature, fauna, brute - a living organism characterized by voluntary movement

eubacteria, eubacterium, true bacteria - a large group of bacteria having rigid cell walls; motile types have flagella

Actinomycetales, order Actinomycetales - filamentous or rod-shaped bacteria

streptomyces - aerobic bacteria (some of which produce the antibiotic streptomycin)