Here are some examples:
* Dalaga: (A young woman)
* Magandang dalaga: (A beautiful young woman)
* Dalaga pa siya: (She is still a young woman)
* Dalagang Pilipina: (A Filipina maiden)
So, while "dalagang" is not a complete word on its own, it is part of the word "dalaga" and plays a role in its meaning.