HYPOCHIL

ˈ ̷ ̷ ̷ ̷+ˌkil noun

or hy·po·chil·i·um ˌ ̷ ̷ ̷ ̷+ˈkilēəm

( -s )

Etymology: New Latin hypochilium, from hypo- + Greek cheilos lip + New Latin -ium — more at gill

: the lower part of the labellum in orchids