coarse plastering, as between the studs in a half-timbered wall.
adjective, Informal. 1. having the sides long and flat, like slabs. 2. tall and lank.
noun 1. a railroad track in which the rails are attached to and supported by a bed or slab, usually of concrete.
adjective 1. not tight, taut, firm, or tense; loose: a slack rope. 2. negligent; careless; remiss: slack proofreading. 3. slow, sluggish, or indolent: He is slack in answering letters. 4. not active or busy; dull; not brisk: the slack season in an industry. 5. moving very slowly, as the tide, wind, or water. 6. weak; […]
adjective 1. improperly baked. 2. imperfectly made.