jargon.artrocity.com
New Hacker's Dictionary the Jargon File v 4.4.6
1. n. A continuous horizontal line of pixels, all with the same color.
2. vi. To paint a slab on an output device. Apple's QuickDraw, like most other professional-level graphics systems, renders polygons and lines not with Bresenham's algorithm, but by calculating slab points for each scan line on the screen in succession, and then slabbing in the actual image pixels.