The Eisenhower interstate system requires that one mile in every five must be straight. These straight sections are usable as airstrips in times of war or other emergencies. The Swiss flag is square. The plastic things on the end of shoelaces are called aglets. There are only 12 letters in the Hawaiian alphabet.
Maine is the only state whose name is just one syllable.
Facetious and abstemious contain all the vowels in the correct order. Alma mater means bountiful mother. The original name for butterfly was flutterby. There are no words in the dictionary that rhyme with orange, purple, and silver. The name Wendy was made up for the book Peter Pan.