a. rare. [f. L. cacūmen, -ūminis a tree-top.] Of a tree: Having a pyramidal top.

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1871.  M. Collins, Inn of Strange Meetings, 10.

                        I remember hours
Of youth and mirth and love ’neath trees cacuminous.
    Ibid. (a. 1879), in Pen Sketches, I. 248.
Luminous books (not voluminous)
To read under beech-trees cacuminous.

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