Sindarin 

ab

preposition. after

ab-

prefix. after, later

Sindarin [Abonnen WJ/387] Group: SINDICT. Published by

ab

after

#ab (only attested as a prefix, as in:)

ab

after

(only attested as a prefix, as in:)

abonnen

afterborn

pl. Ebennin (archaic "Eboennin" = Ebönnin, WJ:387), Elvish name of Men as the "Secondborn" of Eru. – If ab can be used as an independent preposition, it is probably followed by soft mutation.****

Hiro hyn hîdh ab 'wanath

May they find peace after death.

This is a phrase that Legolas, Aragorn, And Gimli think that the hobbits are dead.

Sindarin [http://www.arwen-undomiel.com/elvish/ttt.html] Published by