n. A vigil beside a dying person.n. A guard set over a condemned criminal for some time prior to his execution.n. The popular name of several small beetles which make a ticking or clicking sound, supposed by superstitious persons to be ominous of deathn. A minute, wingless, pseudoneuropterous insect, Atropos pulsatorius, of the family Psocidæ, a great pest in botanical and entomological collections. It also makes a ticking sound.