cover - provide with a covering or cause to be covered; "cover her face with a handkerchief"; "cover the child with a blanket"; "cover the grave with flowers"

invaginate - sheathe; "The chrysalis is invaginated"

enclose, enfold, envelop, enwrap, wrap - enclose or enfold completely with or as if with a covering; "Fog enveloped the house"

immerse, plunge - thrust or throw into; "Immerse yourself in hot water"