OET interlinear LAM 3:16

uW Translation Notes:

Note 1 topic: figures-of-speech / metaphor

וַ⁠יַּגְרֵ֤ס בֶּֽ⁠חָצָץ֙ שִׁנָּ֔⁠י

(Some words not found in UHB: and,he_has_broken with,gravel teeth_of,my he,has_made_me_cower in,ash[es] )

Here the writer is speaking of his degrading humiliation as if God had literally made his teeth grind on gravel. Your language may have a comparable expression that you can use in your translation, or you could state the meaning plainly. Alternate translation: [He has humiliated me in a degrading way]

Note 2 topic: figures-of-speech / metaphor

הִכְפִּישַׁ֖⁠נִי בָּ⁠אֵֽפֶר

(Some words not found in UHB: and,he_has_broken with,gravel teeth_of,my he,has_made_me_cower in,ash[es] )

The writer is speaking of being brought low in mourning and shame as if God had literally pressed him down in the ashes. Your language may have a comparable expression that you can use in your translation, or you could state the meaning plainly. Alternate translation: [he has brought me low in shame]