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flaggingIdentifying data or a process by embedding a code (flag) in it. See flag.
2. A surface paved with flagstones.
3. The process of setting flagstones.
flagstone, flag, flagging
A flat stone, usually 1 to 4 in. (2.5 to 10 cm) thick, used as a stepping-stone or for terrace or outdoor paving; usually either naturally thin or split from rock that cleaves readily; sometimes produced by sawing.