slab line

noun5

1. •
   A climbing route that is characterized by a relatively low-angle rock face or slab that lacks significant vertical features such as large holds or overhangs.

   • Serious slab line right of S-Direct. — 2012
2. •
   A line or small rope by which sailors haul up the foot of the mainsail or foresail.

   • when Kings are hailing up their topgallants , Subjects lay hold on their slablines — 1713
3. •
   A central conductor surrounded by two planar ground slabs.

   • As most of air-dielectric lines the shielded slab line is particularly recommended for operation at high peak and average powers. — 2008
4. •
   (slang) An informal car club for customized slabs (luxury pre-1980 General Motors vehicles)
5. •
   The line on a pair of lenses that indicates where a slab-off prism has been applied.

   • Although Fresnel prism may be used for full-time wear, if successfully worn, it is possible to replace it by ordering slab-off prism with the slab line oriented vertically. — 2023