To be overflowing with something; to teem with or be full of people or things—indicating a state of abundance or crowding.
祭りの日は通りが人で溢れかえっていた。
On the festival day the streets were teeming with people.
店はセールで商品が棚から溢れかえっている。
Because of the sale, the store's products are overflowing from the shelves.
ネット上は情報で溢れかえっているので、正しい情報を見極めるのが大変だ。
The internet is awash with information, so it's hard to discern what's correct.
駅前の広場は待ち合わせの人で溢れかえっていた。
The square in front of the station was overflowing with people waiting for others.