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Verb: top up
  1. To fill something
Noun: top-up  'tóp,úp
Usage: Brit, Cdn
  1. An amount needed to restore something to its former level

Derived forms: tops up, top-ups

Type of: indefinite quantity

Encyclopedia: Top up

Nearest

top lift
top line
top of the inning
top of the line
top off
top onion
top out
top quark
top round
top side
top up
topaz
topcoat
top-down
top-drawer
topdress
tope
topee
Topeka
top-end
toper