From Chinese Hokkien 土庫/土库 (thó͘-khò͘, “private storehouse”).
ꦠꦺꦴꦏꦺꦴ (toko) (krama toko,ꦠꦺꦴꦏꦺꦴ, ngoko toko,ꦠꦺꦴꦏꦺꦴ)