one-piece
adjective
- consisting of a single piece of something
Wiktionary
adj
- Composed of a single integral unit, or so appearing.
“A one-piece metal hammer with an applied rubbery handgrip is nonetheless one integral piece, because the head, shaft, handle, and butt are cast in a single mold and/or forged as one seamless unit.”
“A man's one-piece swimsuit can be as small as a jock strap, whereas a woman's one-piece swimsuit covers both the genitalia and the breasts.”
noun
- A one-piece article of clothing, especially a swimsuit.