Quenya 

peccuvo

noun. squirrel, (lit.) nut-hider

A word for “squirrel” in Late Notes on Verb Structure (LVS) from 1969, literally meaning “nut-hider” (PE22/155), hence a combination of (otherwise unattested) ✱pecco “nut” and cuvo “hider”.

rasillo

noun. squirrel

A word for “squirrel” in notes from 1968-69 based on the root √RATH “climb” (NM/363).