Slabby

Slab"by (?), a. [Compar. Slabbier (?); superl. Slabbiest.] [See Slab, a.] 1. Thick; viscous.

They present you with a cup, and you must drink of a slabby stuff.
Selden.

2. Sloppy; slimy; miry. See Sloppy. Gay.