Wiktionary
swallow up
vb. To completely enclose or envelop
WordNet
Usage examples of "swallow up".
No, let the earth open and swallow her own dirt (if I had millions of acres I would say it) rather than swallow up my dear glorious friend.
The first khalasar they met would swallow up her ragged band, slaying the warriors and slaving the rest.
He was not so pleased when Faile galloped Swallow up alongside him.
A string of drool that could swallow up every star we can see in the night sky connects the lips of his slack-jawed mouth.
Soon an orange speck of light flickered into existence, to spread in its turn and swallow up the green.