tranche

osuus A slice, section or portion.
puhekieltä One of a set of classes or risk maturities that compose a multiple-class security, such as a CMO or REMIC; a class of bonds. Collateralized mortgage obligations are structured with several tranches of bonds that have various maturities.
slice
milling on a coin
period
(inflection of)
puhekieltä slice