Emily Dickinson Lexicon

IM-PROV'A-BLE, a. [See Improve.]

1. Susceptible of improvement; capable of growing or being made better; that may be advanced in good qualities. We have stock enough, and that too of an improvable nature, that is capable of infinite advancement. Decay of Piety. Man is accommodated with moral principles, improvable by the exercise of his faculties. Hale. I have a fine spread of improvable lands. Addison.
2. That may be used to advantage, or for the increase of any thing valuable. The essays of weaker heads afford improvable hints to better. Brown.
3. Capable of tillage or cultivation. A scarcity of improvable lands began to be felt in these colonies. Ramsay, Hist. Carolina. B. Trumbull.