\TOR-pid\, adjective: 1 Having lost motion or the power of exertion and feeling; numb; benumbed 2 Dormant; hibernating or estivating 3 Dull; sluggish; apathetic
Something that is motionless and dull Hummingbirds can become torpid on unusually cold nights This allows them to lower their temperatures and slow their metabolic rates Indeed, long ago hummers were thought dead when they were only torpid If you want to learn more about the incredible world of the Hummingbird, check out this timeless book Hummingbirds: Their Life and Behavior (It is an incredible bargain right now, too)
If you are torpid, you are mentally or physically inactive, especially because you are feeling lazy or sleepy. = lethargic. not active because you are lazy or sleepy (torpidus, from torpere )