ˈ ̷ ̷ˌ ̷ ̷ noun
Etymology: shave (I) + tail; from the custom of shaving the tails of mules when they are broken in so that they can be easily distinguished from the untrained ones
1. : a pack mule especially when newly broken in
2. : a newly commissioned officer : second lieutenant — usually used disparagingly
hell hath no fury like a shavetail scorned — Harold Fleming