অর্থ : Minute wingless psocopterous insects injurious to books and papers.
সমার্থক : book louse, booklouse, liposcelis divinatorius
অর্থ : Bores through wood making a ticking sound popularly thought to presage death.
সমার্থক : deathwatch beetle, xestobium rufovillosum
Deathwatch meaning in Bengali (Bangla).