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Webster 1913 Edition

Adj.

Like a stock; stupid; blockish.

Since naught so

stockish

, hard, and full of rage,
But music for the time doth change his nature.

Shakespeare

Adj.

Hard; stupid; blockish. [Little used.]

stockish ‎(comparative more stockish, superlative most stockish)

(obsolete) Like a stock; stupid; blockish.
- Shakespeare
  Since naught so stockish, hard, and full of rage, / But music for the time doth change his nature.
- 1881, Robert Louis Stevenson, Virginibus Puerisque:
  Many who have "plied their book diligently," and know all about some one branch or another of accepted lore, come out of the study with an ancient and owl-like demeanour, and prove dry, stockish, and dyspeptic in all the better and brighter parts of life.