definition of
infest

[1] #1 infest v. [overrun] invade in great numbers; "the roaches infested our kitchen". wn

[2] #2 infest v. [invade, overrun] occupy in large numbers or live on a host; "the Kudzu plant infests much of the South and is spreading to the North". wn

[3] #3 infest v. live on or in a host, as of parasites. wn