boogum
noun
boo·gum
ˈbü-gəm
variants or boojum
ˈbü-jəm 
plural -s
: a spiny tree (Idria columnaris) of the family Fouquieriaceae chiefly of Lower California sometimes arching over and rooting at its tips
Word History
Etymology
perhaps from boojum, an imaginary creature in The Hunting of the Snark by Lewis Carroll (C.L.Dodgson) †1898 English mathematician & writer; from its grotesque appearance
First Known Use
1951, in the meaning defined above