Young Teen Girl In Tight Pants

North Americans call undergarments underwear, underpants, "captain underpants", "long johns" or panties (the last are women's garments specifically) to distinguish them from other pants that are worn on the outside. The term drawers normally refers to undergarments, but in some dialects, may be found as a synonym for "breeches", that is, trousers. In these dialects, the term underdrawers is used for undergarments. In Australia, men's undergarments are called underwear, underpants, undies, under-dacks, dacks or jocks.
Various people in the fashion industry use the word pant instead of pants. This is nonstandard usage. The word "pants" is a plurale tantum, always in plural form—much like the words "scissors" and "tongs". However, the singular form of the word is used in some compound words, such as trouser-leg, trouser-press and trouser-bottoms.