To overflow, as by water from excessive rainfall.
To cover or partly fill as if by a flood.
The floor was flooded with beer.
To provide (someone or something) with a larger number or quantity of something than can easily be dealt with.
The station's switchboard was flooded with listeners making complaints.
To paste numerous lines of text to (a chat system) in order to disrupt the conversation.
To bleed profusely, as after childbirth.
Filled with water from rain or rivers.
Filled with too much fluid.
(by extension) Overwhelmed with too much of something.
Our phones were flooded with calls after the controversial broadcast.