Strong’s Greek
G2355 — threnos
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
κλαυθμός
threnos — pronounced thray'-nos
from the base of 2360; wailing:--lamentation. see GREEK for 2360
1 occurrence in the KJV.
Matthew 2:18
In Rama was there a voice heard, lamentation, and weeping, and great mourning, Rachel weeping for her children, and would not be comforted, because they are not.