What does the word balsam mean?

Usage examples for balsam

  1. A cover- glass, also made thoroughly clean and dry, is then placed over the specimen and pressed gently until the balsam entirely fills the space between the cover and the glass slide. – Directions for Collecting and Preserving Insects by C. V. Riley
  2. The pure air of the balsam forest and the comfort of the solitude had at length had their way with him. – The Long Lane's Turning by Hallie Erminie Rives
  3. L Clavering had tied the boat to a tree in a little inlet far down the lake, and they were walking through a wood of spruce trees and balsam. – Black Oxen by Gertrude Franklin Horn Atherton
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