It is a term of endearment and respect used to address or refer to one's mother.
Here are some examples of how "ina" is used in Tagalog:
* "Mahal ko ang aking ina." (I love my mother.)
* "Narito ang regalo para sa aking ina." (Here is a gift for my mother.)
* "Magandang umaga, ina." (Good morning, mother.)
* "Salamat, ina." (Thank you, mother.)