Princeton's WordNet

1. Thomas, Seth Thomas(noun)

   United States clockmaker who introduced mass production (1785-1859)

   Synonyms:
   doubting Thomas

2. Thomas, Norman Thomas, Norman Mattoon Thomas(noun)

   United States socialist who was a candidate for president six times (1884-1968)

   Synonyms:
   doubting Thomas

3. Thomas, Lowell Thomas, Lowell Jackson Thomas(noun)

   a radio broadcast journalist during World War I and World War II noted for his nightly new broadcast (1892-1981)

   Synonyms:
   doubting Thomas

4. Thomas, Dylan Thomas, Dylan Marlais Thomas(noun)

   Welsh poet (1914-1953)

   Synonyms:
   doubting Thomas

5. Thomas, Saint Thomas, St. Thomas, doubting Thomas, Thomas the doubting Apostle(noun)

   the Apostle who would not believe the resurrection of Jesus until he saw Jesus with his own eyes

   Synonyms:
   doubting Thomas