The crossword solution for the term '__ SELLS SEASHELLS' is SHE. This is a reference to the popular tongue twister 'SHE Sells Seashells by the Seashore'. The phrase was first published in 1908 by English composer Terry Sullivan in his book 'Round the Corner Rhymes'. It is one of the most famous tongue twisters in the English language and has been used in many different contexts, from children's books to advertising campaigns.