English is a very flexible and versatile language. The word "in" may be used in either of those senses, among many others. Dictionary.com lists examples of bot

English is a very flexible and versatile language. The word "in" may be used in either of those senses, among many others. Dictionary.com lists examples of both meanings: 1. (used to indicate inclusion within space, a place, or limits): walking in the park. 5. (used to indicate means): sketched in ink; spoken in French. http://dictionary.reference.com/browse/in http://dictionary.reference.com/browse/in