Definition of "understock" [un•der•stock]

• To stock with an insufficient amount. (verb)
• The rootstock onto which the scion is grafted. (noun)

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• "You cut your scion wedge and then make your understock cut and you will seldom make a mistake after you get experience."
• "Illinois orchard is on a Wisconsin bitternut understock."
• "Broadview has often suffered winter injury at both locations, and in 1950-51 was killed to the understock at Urbana."