Dwelling as nonresiding? What does that mean? We can find an important clue by tracing the word dwell back to two apparently antithetical roots: Old Norse dvelja, linger, delay, tarry, and Old English dwalde, go astray, err, wander1...Dwelling is accomplished not by residing but by wandering.

1. I say "apparently antithetical" because the kindred term dwale, which meant "error" or "delusion" as well as "stupefying drink" may be a bridge between the two otherwise separate ur-senses of dwell. To be stupefied (which is the meaning of the Middle Dutch dwellen) is to be hindered or delayed in one's course, made to tarry in a way that begins to resemble residing somewhere.

Edward Casey, Getting Back Into Place 114, 352.