Zarf. It's an ornamental metal cup-shaped holder.
A five (5) letter word that starts with Z and ends with F, there is none recorded. However, there is a word that starts with Z and ends with F. The word is a four (4) letter word: zarf, (noun) a metal holder for a coffee cup.
zeefe
fizz, fuzz
zarf zarf zarf
Franz
alchochaz
Zebra
wiz?
cat
ditz
Zanex
The "alphabet".