I. ˈ ̷ ̷ˌ ̷ ̷ noun
1. : a stone serving as a milepost
2. : a significant point in any progress or development
[s]mileston.jpg[/s] [
milestone 1
]
II. transitive verb
: to furnish or mark with or as if with a milestone
life pathetically milestoned with fragments … frustrated hopes — W.H.Gardner