(pathology, immunology) pathogen

a lifeform

(mathematics) real number field

transparent object

(biology) colony

throughout the body, from head to foot, all over

the inside of the body, somewhere inside the body

tackle, body blow, body check

body check, tackle / give all one's might, give everything you've got

a blanket term for various styles of Japanese hand-to-hand martial arts, either wholly unarmed or using short weapons / jujutsu / short for 武神館武道体術(ぶじんかんぶどうたいじゅつ) (Bujinkan Budō Taijutsu)