Crossword clues for the word: WIDENER The word WIDENER has appeared as an answer to at least 8 crossword clues on different crossword puzzles. Crossword clues for WIDENER Showing 1 to 8 of 8 results Clue(s) "Road improvement crew, at times" Expander Expander of a Harvard library? Harvard Yard's ___ Library Harvard's ___ Library It causes something to broaden One that dilates Philadelphia art collector.