What does alcala mean?

Answer 1

No translation from Spanish, did you mean "de la calle"?

There are a number of sites that use that term in their name, the Alcalá de Henares in Spain which is said to mean "Citadel on the river Henares"; The Puerta de Alcalá, a monument in Madrid, Spain; and Mission San Diego de Alcalá near San Diego, CA. The use of Alcalá is described as from the Arabic word al-qal'a, for fortification or citadel.