1 wolf (down), gulp (down), bolt, swallow (up), gorge, gobble (up), gormandize, cram, stuff, eat (up) greedily, Archaic gluttonize; Colloq Brit pig, US and Canadian pig out (on):
He was so hungry when he came in that he devoured two whole pies and a plate of chips.
2 consume, waste, destroy, wipe out, ravage, annihilate, demolish, ruin, wreak havoc (up)on, devastate, obliterate, eradicate:
A quarter of Europe was already devoured by the plague.
3 relish, revel in, absorb, be absorbed by; engulf, consume, drink in, eat up, swallow up, take in; swamp, overcome, overwhelm:
He eagerly devoured all of Dickens's novels. The sea devoured its victims silently.