"British is "británico" or "británica".
If you are referring to the British word for "ballpoint pen" the Spanish (from Spain) is typically "la pluma" whereas the Spanish from Latin America is typically "el bolígrafo" or "el bolí" for short.
the Spanish
The word "potato" is rooted in two Native American words: the Taino word "batata" and the Quenchua word "papa." The Spanish combined these words to make their own name for the plant: "patata." Later, when the plant was found by the British, the Spanish word was transformed into the English word "potato."
Spanish and British treated the native's poorly. They saw them as worthless.
The spanish word for guitar is Guitarra. This English word came directly from the Spanish word, but it is not a Spanish word any more than the Spanish word is an Arabic word. "qutar" or a Greek word Chirara.
The spanish word for did is hizo.
"De" is the Spanish word for "of".
The Spanish word for "in" is "en".
The Spanish word for "who" is "quién".
"Con" is the spanish word for "with".
The Spanish word for "she" is "ella".
The spanish word for leg is Pierna. :]