What is the meaning of Reliable?

Suitable or fit to be relied on; worthy of dependence, reliance or trust; dependable, trustworthy

Such that either a sent packet will reach its destination, even if it requires retransmission, or the sender will be told that it didn't.

(Can we verify this sense?) (journalism, of a publisher) A member of the mass media, especially one with corporate sponsors and owners.

Something or someone reliable or dependable

Source: wiktionary.org