The Collaborative International Dictionary
erumpent
erumpent \e*rum"pent\, a. [L. erumpens, -entis, p. pr. of erumpere.] (Bot.) Breaking out; -- said of certain fungi which burst through the texture of leaves.
Wiktionary
erumpent
a. That emerges, or bursts through; breaking forth.
Usage examples of "erumpent".
I recognize the grooved markings around the base, that's an Erumpent horn and it's incredibly dangerous - I don't know where you got it-"
He launched himself sideways, shoving Ron and Hermione out of harm's way as Xenophilius's Stunning Spell soared across the room and hit the Erumpent horn.
He launched himself sideways, shoving Ron and Hermione out of harm’s way as Xenophilius’s Stunning Spell soared across the room and hit the Erumpent horn.
The musicians added to the erumpent revelry with a sprightly semi-martial tune.