The term 'Palindrome Middle' refers to a type of wordplay in which the middle letters of a word are reversed to form a new word. The two crossword solutions for this term are IEREI (5 letters) and ERE (3 letters). IEREI is an example of a palindrome middle, as the middle letters are reversed to form a new word. ERE is also an example of a palindrome middle, as the middle letter is reversed to form a new word.