from The Century Dictionary and Cyclopedia
- n. The act of causing a table to rise by laying the tips of the fingers or the palms of the hands upon its upper surface, as in table-tipping.
Sorry, no etymologies found.
Before long, the nation was in thrall to spiritualism, "holding seances ... to send messages to spirits by knocking on tables and receiving replies that came in the form of sounds, ghostly hands, chair-moving, table-lifting, flying objects and so on."
"The luminous gauze, for instance, that passes for ectoplasm; the various methods of table-lifting; control of the Ouija board -- things like that?"