一体

(what) the heck; (why) in the world; (who) on earth; (where) the hell; (how) the hell

before an interrogative; forms an emphatic question

one object; one body; one unit; one group; one mass

one form; one style; one format; one fashion

one Buddhist image; one carving; one sculpture

one corpse; one sample (of bones, remains, etc.)

generally; in general; on the whole; by and large; for the most part

also as ～に

strictly speaking; in the first place; originally; to begin with