home o Julia Galdo old [ohld] –adjective 1. far advanced in the years of one's or its life: an old man; an old horse; an old tree. 2. of or pertaining to the latter part of the life or term of existence of a person or thing: old age. 3. as if or appearing to be far advanced in years: Worry had made him old. 4. having lived or existed for a specified time: a man 30 years old; a century-old organization. a b c d e f g h i j k l m n o p q r s t u v w x y z observatory office observe old oneiric open outlook overcast orange