riser

Từ điển Oxford Advanced Learner 8th

riser [riser risers] BrE [ˈraɪzə(r)] NAmE [ˈraɪzər] noun
1. early/late ~ a person who usually gets out of bed early/late in the morning
2. (technical)the vertical part between two steps in a set of stairs
compare ↑tread

• Từ đồng nghĩa / Synonyms:
  riser pipe, riser pipeline, riser main