In a dream, a millstone represents a husband and a wife. (Also see Hand mill)
Dream dictionary: Millstone dream meanings
…(Laboring | Livelihood | Millstone | Travel) A hand mill in a dream means overcoming distress, pain, or satisfying one’s needs. It could also mean richness after poverty, marriage, a servant, or moving into a new house. If someone sees a hand mill in a house that is not accustomed to grinding its own grain or spices in a dream, it means adversities, defeat, or arguments. If one then grinds bread, or meat or honey with in the dream, it denotes a despicable character of the people of that house, their falsehood, affectation, lesbian or pervert nature. If one sees a hand mill grinding stones in a dream, it means that he will be seized by terror. If one grinds barley or grains for food in a dream, it means solving the family’s problems, prosperity, recovering from illness, or refurbishing one’s business. If one sees a huge hand mill…
…(Hotel | Inn | Millstone | World) In a dream, travels mean discovering people’s substance or character. If a poor person sees himself travelling in a dream, it means that he will become rich. If one hosts travellers in a dream, it means that he may receive news from that direction. Travelling in a dream also means changing condition, state, environment, or that one may have to wash the floor of a house, or change his employer, repent for his sin, or satisfy what his heart desires. Travelling on foot in a dream means owing a debt that is weighing heavy in one’s heart. Moving out of an unknown house in a dream means travelling. If a sick person sees himself travelling from one land into another that he could not recognize in his dream, it means his death. If a traveller sees himself carrying a food basket in…
…(Grinder | Press) In a dream, a mill represents a school, a courthouse, a balance, justice, righteousness, benefits, blessings, money, food, charity, or marriage. The millstone in a dream represents a wife and a husband. The flour that issues from between the two grinding stones represents sperms or children. A mill in a dream also means distress and adversities, uptightness, headache, a rivulet, or a windmill. If one sees a mill grinding human beings in a dream, it means loss of lives and adversities. If one sees a mill grinding something that is not edible in a dream, it means drought and rising prices. If the amount of flour coming from the mill is plentiful in the dream, it means lowering of prices, or recovering from an illness. Grinding lupine seeds, henna seeds, potash, saltwort, salsola kali, jojobe seeds or any seeds from the marsh mallow tree in a…