thin as a rail

== English == === Adjective === thin as a rail (not comparable) (simile, rare) Very thin, unhealthily thin. Synonyms: skinny as a rail, thin as a rake, thin as a wafer ==== Related terms ==== === References === “thin as a rail”, in Dictionary.com Unabridged, Dictionary.com, LLC, 1995–present. “thin as a rail” in Idioms and phrases, TheFreeDictionary.com, Huntingdon Valley, Pa.: Farlex, Inc., 2003–2026.