Other: Sp.

OTRA

["Think of how you might refer to an additional item in a Spanish-speaking country."]

The clue "Other: Sp." leads to the answer "OTRA" through a straightforward translation. In Spanish (indicated by "Sp."), the word for "other" is "otra" (when referring to a feminine singular noun). Therefore, the clue is asking for the Spanish word for "other," which is "OTRA." There is no complex wordplay or pun involved; it's a direct linguistic reference.