top-up cardˈtop-up ˌcard noun [countable] 
a card that you buy in order to be able to continue using a pay-as-you-go mobile phone
a card that you buy in order to be able to continue using a pay-as-you-go mobile phone- companionable
- companionably
- Companion of Honour
- companionship
- companionway
- company
- company car
- company law
- company secretary
- comparability
- comparable
- comparably
- comparative
- comparatively
- compare
- comparison
- comparison-shop
- comparison shopping
- compartment
- compartmentalization
- compartmentalize
- compartmentalized
- compass
- compassion
- compassionate