Senses
一身 a suit of clothes
a set of clothing; an outfit
一身 whole body
all over the body; from head to toe; used to describe being covered in something like sweat, mud, or debt
一身 single person
a person by themselves; alone; solitary
一身 body length
one's height or the length of one's own body, especially in classical or historical contexts
一身 sole descendant
(literary) the only person left to carry on the family line; an only child