Excerpt - page 1835: "... -dôr') n. Any of various insect-eating spiders of the family Ctenizidae, found in warm climates, that construct a silk-lined burrow concealed ..."
Excerpt - page 1531: "... trapdoor spider any of various often large, spiders (esp. family Ctenizidae) that dig a burrow and cover the entrance with a ..."