source: Oozing Surprise GIF | Gfycat

1. an overflowing of a large amount of water beyond its normal confines, especially over what is normally dry land:

〖しばしば～s〗 洪水, 大水, (水の)氾濫

e.g. as modifier : a flood barrier

e.g. in a thousand miles the flood destroyed every bridge

e.g. people uprooted by drought or flood.

(the Flood) the biblical flood brought by God upon the earth because of the wickedness of the human race (Gen. 6 ff.).

〖the F-〗ノアの洪水(Noah's Flood)

the inflow of the tide.

上げ潮(↔ ebb)

literary a river, stream, or sea.

｟詩･古｠ 海, 川, 湖

2. an outpouring of tears or emotion:

〖通例a ～/～s of A〗 A〈物･人〉の殺到, 充満; 多数のA (!AはC名詞複数形かU名詞; C名詞複数形が続く場合は通例複数扱い)

e.g. Rose burst into such a flood of tears and sobs as I had never seen.

a very large quantity of people or things that appear or need to be dealt with:

e.g. a constant flood of callers.

3. short for floodlight.

｟話｠ ＝ floodlight.

1. with object cover or submerge (a place or area) with water:

〈容器など〉を水であふれさせる; 〈場所〉を灌漑（かんがい）する

e.g. the dam burst, flooding a small town

e.g. watching her father flood their backyard skating rink.

no object become covered or submerged with water:

〈場所が〉水浸しになる

e.g. part of the vessel flooded

e.g. figurative : Sarah's eyes flooded with tears.

(usually be flooded out) drive someone out of their home or business with a flood:

be flooded out (of ［from］ A)(A〈家など〉から)〈人が〉洪水で追い出される

e.g. most of the families who have been flooded out will receive compensation.

(of a river or sea) become swollen and overflow (its banks):

〈川などが〉〈場所〉を水浸しにする, 冠水させる

e.g. the river flooded its banks

〈川などが〉氾濫する, あふれる.

e.g. no object : the river will flood if it gets much worse.

overfill the carburetor of (an engine) with fuel, causing the engine to fail to start.

〈エンジン〉にガソリンを入れすぎる

2. no object, with adverbial of direction arrive in overwhelming amounts or quantities:

〖～(＋副詞)〗 〈多くの人･物が〉大量に押し寄せる, 殺到する(in) (!〖副詞〗は方向の表現)

e.g. sunlight flooded in at the windows

e.g. congratulatory messages flooded in

e.g. his old fears came flooding back.

with object completely fill or suffuse:

【物･光･苦情などで】〈場所など〉をいっぱいにする «with» ;〖be ～ed〗 «…で» あふれかえる «with, by»

e.g. she flooded the room with light.

with object overwhelm or swamp with large amounts or quantities:

〈多くの人･物が〉〈場所など〉にあふれる, 殺到する

e.g. our switchboard was flooded with calls.

be in flood (also be in full flood)

(of a river) be swollen and overflowing its banks.

(be in full flood) be progressing or talking vigorously or enthusiastically:

e.g. discussion was already in full flood and refused to be dammed.

Old English flōd, of Germanic origin; related to Dutch vloed and German Flut, also to flow.