Include something as a necessary component or consequence, to entail or imply.

Cause or engage someone or something to become connected or implicated, or to participate in an activity or situation, specifically in an emotional or sexual relationship.

(figuratively) To entangle, intertwine, or mingle (something with one or more other things, or several things together); especially, to entangle (someone or something) in a confusing or troublesome situation.

Cover, envelop, hide, surround, form into a coil or spiral, entwine, fold up, roll, wind round.

Make something intricate or complicated, or to multiply a number by itself a given number of times.