Bodice block

A general term for any foundational, unfitted-detail pattern piece—such as a bodice, skirt, sleeve, or trouser block—from which other pattern designs are developed.

A term for a basic block or sloper used as the structural starting point for developing new pattern designs through slashing, spreading, or adding style lines.

A sloper drafted or fitted specifically to one individual's body measurements rather than a standard size, used to produce well-fitting patterns for that person alone.

A basic sloper covering the body from waist to hip level, fitted with darts to the waist, used as the foundation for drafting skirt designs.

A basic sloper for a set-in sleeve, drafted to match the armhole of a corresponding bodice block, used as the foundation for drafting sleeve designs.