the world > relative properties > wholeness > mutual relation of parts to whole > fact or action of being joined or joining > attachment > attach or affix [verb (reflexive)] (3)
transitive (reflexive). To attach oneself; to stick or adhere to something. Chiefly with to.
Of a thing: to bond, join, or fasten on to; to connect functionally to. transitive (reflexive). Also figurative.