n. — Industry, Administration
a subsidy, usually as an incentive for manufacturing.
Type: 5. Frequency — The verb "to bonus" is first cited in OED-3 in 1886 and defined as "to give a bonus to; to assist or promote by bonuses" (see OED-3, s.v. "bonus" [v.]). Bonusing is derived from this term, attested as of 1887 in Canada, and has been specialized to refer to government subsidies. The term appears to be most frequent in Canada (see Chart 1) and might be a Canadian innovation.
See also COD-2, s.v. "bonusing", which is marked "Cdn".
See also: bonus
Images:

Chart 1: Internet Domain Search, 9 Oct. 2013