Socks stand for comfort and the warmth you give your own footing. Dream books read a lost sock as something missing from a pair, and fresh socks as small, everyday care.
Has this come up in your dreams before? What was going on in your life then?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.