a location used to secretly pass items between two people, without requiring them to meet
a drop used for the clandestine exchange of intelligence information; "a dead drop avoids the need for an intelligence officer and a spy to be present at the same time
If you describe someone as, for example, drop-dead gorgeous, you mean that they are so gorgeous that people cannot fail to notice them. She said that Campbell-Black was drop-dead gorgeous Drop-dead is also an adjective. the drop-dead glamour of the designer decade
[ 'ded ] (adjective.) before 12th century. Middle English deed, from Old English dEad; akin to Old Norse dauthr dead, deyja to die, Old High German tOt dead; more at DIE.