Webster's Revised Unabridged Dictionary · 1913

Obi

Obi , noun

[Probably of African origin.]

1.
A species of sorcery, probably of African origin, practiced among the negroes of the West Indies. — De Quincey
2.
A charm or fetish. [West Indies] — B. Edwards

Obi (ō"be) , noun

[Jap.]

A sash, esp. the long belt-like broad sash of soft material worn by women around the waist when wearing a traditional kimono, and usually having a large bow at the back.
Over this is bound the large sash (obi) which is the chief article of feminine adornment. — B. H. Chamberlain