Deathwatch

Webster's Dictionary of the English Language

·noun The guard set over a criminal before his execution.

II. Deathwatch ·noun A small wingless insect, of the family Psocidae, which makes a similar but fainter sound;

— called also deathtick.

III. Deathwatch ·noun A small beetle (Anobium tessellatum and other allied species). By forcibly striking its head against woodwork it makes a ticking sound, which is a call of the sexes to each other, but has been imagined by superstitious people to presage death.