canada balsam

Noun

• medium-sized fir of northeastern North America; leaves smell of balsam when crushed; much used for pulpwood and Christmas trees

• yellow transparent exudate of the balsam fir; used as a transparent cement in optical devices (especially in microscopy) and as a mounting medium

Related words

• Synonyms: 
  balsam fir , balm of Gilead , Canada balsam , Abies balsamea