Of material objects. Of soil: stiff, heavy; difficult to work.

Of soil: heavy, dense; not porous or friable; difficult to work.

Of soil: rough, hard; not easily worked; esp. consisting largely of clay and chalk. Cf. pinnocky, adj. Now English regional (southern) and rare.

Of soil: poor, not very fertile; (perhaps) heavy and full of small stones (cf. pinnock, n.2).