https://www.merriam-webster.com/dictionary/bull-horn%20acacia
BULL-HORN ACACIA Definition & Meaning - Merriam-Webster
The meaning of BULL-HORN ACACIA is any of several hollow-thorned trees of the genus Acacia; especially : a large-thorned chiefly Central American tree (A....
bull horn acaciadefinitionmeaningmerriamwebster
https://www.rhs.org.uk/plants/106/acacia-spadicigera/details
Acacia spadicigera | bull's horn acacia /RHS
acacia spadicigerabullhornrhs