Thanks to specialized legs, however, a horse can lock its knees and fall asleep standing up â without falling over! A horse's fear of predators also leads it to do most of its sleeping during the day. Just because a horse can fall asleep standing up doesn't mean it never lies down, though. Sometimes horses will take naps lying down during the day. This gives them a chance to rest their legs. On a sunny day, you may see horses stretched out in a field soaking up sunshine.
 desserts  /  stressed .  diaper  /  repaid 1  . A word, phrase, or sentence that has the property of forming another word, phrase, or sentence when its letters are reversed. 2  A semordnilap differs from a palindrome in that the word or phrase resulting from the reversal is different from the original word or phrase.
Semordnilap (palindromes spelled backward) is a name coined for words that spell a different word in reverse. The word was coined by Martin Gardner in his notes to C.C. Bombaugh's book Oddities and Curiosities of Words and Literature. An example of this is the word repaid, which is diaper spelled backward.