What's the error?

Scope in Ruby.md

#Scope in Ruby

def longest_palindrome(words)
  words.split.each do |word|
    #Initialize current longest palindrome 
    curr_palindrome = ""
    
      #replace current palindrome if longer 
      curr_palindrome = word if word.length > curr_palindrome.length && palindrome?(word) 
  end
  return curr_palindrome
end 

##Error curr_palindrome is out of scope. Only accessible within the each loop on lines 3 - 9

undefined local variable or method `curr_palindrome' for main:Object