WordReference Random House Unabridged Dictionary of American English © 2026
boo′jum tree′
(bo̅o̅′jəm),USA pronunciation
- Plant Biologya tree, Idria columnaris, native to Baja California, having spreading spiny branches, deciduous leaves, and yellow flowers. Also called cirio.
- after the boojum, an imaginary creature invented by Lewis Carroll in the poem The Hunting of the Snark (1876) 1960–65
'boojum tree' also found in these entries (note: many are not synonyms or translations):