Gyromitra
noun
Gy·ro·mi·tra
| \ ˌjī-rō-ˈmī-trə
, ˌjir-ə-
\
, ˌjir-ə-
\
Medical Definition of Gyromitra
: a genus of ascomycetous fungi (family Helvellaceae) that are usually poisonous and often deadly when eaten and that typically have a cap which is either wavy and bumpy or has convolutions resembling a brain — see false morel