(dialect chiefly England) Thick, viscous

ETYM Old Eng. slabbe, of uncertain origin; perhaps originally meaning, a smooth piece, and akin to slape, Icel. sleipr slippery, and Eng. slip, v. i.
Thick piece of something.

1. To remove an outer slab from (as a log); to divide or form into slabs
2. To cover or support (as a roadbed or roof) with slabs
3. To put on thickly