† pyramid trainingn.HorticultureObsoleterare the practice of pruning or training a tree (esp. a fruit tree) such that it grows into a pyramid shape.
ΚΠ
1887 G. NicholsonIllustr. Dict. Gardening III. 47/1Pyramid training is largely practised with Pear-trees... Pyramids may be procured worked either on the Pear stock or on the Quince.