This is the 8854th most frequent Spanish word.
tena
In Spanish, "tena" is not a common standalone word but might be a typo or a specific proper noun, such as a place name (e.g., Tena, a town in Ecuador or Colombia).
In this sentence, 'Tena' is a proper noun, used as the name of a specific heroine.
Cuando era niño, mi abuela me contaba historias sobre una heroína llamada Tena.
When I was a child, my grandmother told me stories about a heroine named Tena.
Here, 'Tena' refers to a place name, specifying a city.
Visité Tena, una ciudad hermosa en Ecuador, durante mis vacaciones.
I visited Tena, a beautiful city in Ecuador, during my vacation.
In this context, 'Tena' is a brand name associated with specific products.