ˈ ̷ ̷ˌ ̷ ̷ adjective
Etymology: break (I) + neck
: inviting danger especially of a broken neck: as
a. : very rapid : headlong
traveling at breakneck speed
b. : very steep
breakneck stairs to the attic
ˈ ̷ ̷ˌ ̷ ̷ adjective
Etymology: break (I) + neck
: inviting danger especially of a broken neck: as
a. : very rapid : headlong
traveling at breakneck speed
b. : very steep
breakneck stairs to the attic
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012