Hamaca translates to "hammock". It's an interesting word because it evokes a sense of relaxation, leisure, and exotic locales, which perfectly fits the song's theme of escaping to imaginary paradises like Hawaii and Bombay.
In the lyrics, the singer is "Tumbado en mi hamaca" (Lying in my hammock) while dreaming of these faraway places. It's a vivid image that transports the listener to a state of blissful escapism, making it a memorable and enticing word for learners.