Is there an English translation of the Onomasticon by Julius Pollux of Naucratis?
Apparently it exists, but you might have a hard job finding a copy.
WorldCat has an entry with the following description:
Onomastikon Iouliou Poludeukou = the Onomasticon of Julius Pollux : an introduction to translation
Author: Julius Pollux; Leland A Hall
Edition/Format: Manuscript Archival Material : English
With notes which seem to confirm that it's an English translation (in case you might think the "English" above is an archiver's error):
"Prepared as an Honors Thesis for the Department of English, University of Oregon ... May 15, 1960."
Typescript (carbon copy)--with handwritten corrections.
Translation of various sections of the Onomastikon.
"The translation has been made from the Lexicographi Graeci series, volumes IX and X, edited by Eric Bethe (Leipzig, 1932)."--Page iv.
Apparently, the manuscript is available to borrow from University of Oregon libraries.
I tried to find a Leland Hall who studied in the University of Oregon, and came across this fellow:
Studied at University of Oregon
School year 1960
I don't have a Facebook account to see any more info about him, but it's possible he might respond to an interested reader about his work of sixty years ago.