I keep running into the term “plain deal table” in Bristish literature. (Also, rarely, “deal chair”)
E.g 1984 “There was a deal table under the window where he and the old man could talk without fear of being overheard.”
Sherlock Holmes, The Red-headed League “There was nothing in the office but a couple of wooden chairs and a deal table, behind which sat a small man with a head that was even redder than mine.”
It always implies crude furniture but I wonder what exactly that means, what would describe that to distinguish it from other cheap tables.