Wiktionary
boattail
alt. 1 The progressively narrowing rear end of a bullet or ballistic missile that is designed to reduce drag 2 A large grackle or blackbird ((taxlink Quiscalus major species noshow=1)), found in the Southern United States. n. 1 The progressively narrowing rear end of a bullet or ballistic missile that is designed to reduce drag 2 A large grackle or blackbird ((taxlink Quiscalus major species noshow=1)), found in the Southern United States.
Usage examples of "boattail".
The bullet itself was a 173-grain boattail and it struck its target at a speed of a half mile a second.
Gore figured that head shots with 173-grain, M-118 boattails would open up the backs of those greasy black helmets as if they were paper bags full of mashed yams.