pants

In American English, this term refers to trousers. In British English, however, it refers specifically to undergarments, creating a significant regional divide in meaning. Using this word in London to describe outerwear may lead to humorous or awkward misunderstandings. Because the garment consists of two identical legs, it is treated as a plurale tantum. It is almost never used in the singular form unless referring to a specific style of clothing in a technical fashion context.