ris·er /ˈraɪzɚ/
起床者,叛徒,起義者,豎板
Ris·er n.
1. One who rises; as, an early riser.
2. Arch. (a) The upright piece of a step, from tread to tread. Hence: (b) Any small upright face, as of a seat, platform, veranda, or the like.
3. Mining A shaft excavated from below upward.
4. Founding A feed head. See under Feed, n.
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riser
n 1: a person who rises (especially from bed); "he's usually a
late riser"
2: a vertical pipe in a building [syn: riser pipe, riser
pipeline, riser main]
3: structural member consisting of the vertical part of a stair
or step