An ingot is metal cast into a solid block, read as value gathered and stored, effort turned into something concrete. Dream books link it to potential not yet shaped into use.
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.