top up
verb
(
transitive, adverb
) (
Brit
)
1.
to raise the level of (a liquid, powder, etc) in (a container), usually bringing it to the brim of the container:
top up the sugar in those bowls
2.
to increase the benefits from (an insurance scheme), esp to increase a pension when a salary rise enables higher premiums to be paid
to add money to (a loan, bank account, etc) in order to keep it at a constant or acceptable level
noun
3.
an amount added to something in order to raise it to or maintain it at a desired level
(
as modifier
):
a top-up loan,
a top-up policy