That's probably "yen." The "r" may be incorrect.
Three letter words ending with I are:chikoileiobipoiski
a three letter word is bug. Three letter words ending with the letter g are bug and hug.
Some three letter words ending in AT are:batcateatfathatmatpatoatpatratsattatvat
yen
Mis- is a three-letter prefix meaning an error or mistake.
Three letter words ending in -s are:YesBusAdsCosHasHisInsSisSosWas
A three-letter word ending in "ux" is "lux," which means a unit of illumination or light.
Some three letter words ending in Y are:anybaybuycaycoycrydaydryfryflygayguyhayheyjayjoykeylaymaypayraysaysoyshyslyspystywaywhywry
boa
who
tea
The three-letter word for scull is "oar."