I think they do have meanings. The Bible speaks of dreams within dreams and Joseph had dreams from God as well as many others. Usually if you have the same dream twice it is a sign of something, and if you have it 3 times, it is for sure significant. I would pray and ask the Lord about revealing the dream.
Here is an example, a friend of mine told me of a recurring dream she had 3 times in one week. The dream was her aunts house was smoking really bad and in the dream she would feel compelled to go drive by her aunts house and and when she did the whole house was full of smoke but she never seen the fire.
I prayed about it and the Lord told me what to tell her, so I said to her, this is your dream, you aunt has a bad disease of some kind and they will find out she does have a disease but will not be able to find how she got it. I then said, the smoke is the signs of a bad disease and you love her and she will need you in the time of this, the smoke means there is a fire or a cause somewhere and they will need to search to find it.
Well 3 weeks later she came to me and told me her aunt started having medical problems the week she had the dreams of her but did not tell anyone, and the Dr. could not find out why she was having the issues, then come to find out 3 weeks later that she had lung cancer very bad and may not have long to live.
So see the smoke indicated a bad problem as to it was a sign as to her sudden health problems, but not seeing the fire in the house meant it was a hidden cause that they would find later, and of course the house meant her aunt as our body is a house and smoke is typical of a evil spirit as well. Her having the dream was because her and her aunt was really close and this friend was a Christian lady and God wanted her to know to encourage her faith and to let her spend her last days with her. I hope this helps. I have seen my own dreams come very true right before my eyes. My Pastor told me God had given me the gift of dreams and visions. God Bless!