| 单词 | riser |
| 释义 | riser /ruy"zeuhr/, n. 1. a person who rises, esp. from bed: to be an early riser. 2. the vertical face of a stair step. 3. any of a group of long boards or narrow platforms that can be combined in stepwise fashion: The choir stood on a horseshoe of risers behind the orchestra. 4. a vertical pipe, duct, or conduit. 5. Metall. a chamber or enlarged opening at the top of a mold for allowing air to escape or adding extra metal. 6. Naut. a. a heavy strake of planking in the vicinity of the garboard strake in a wooden vessel. b. rising (def. 10). [1350-1400; ME; see RISE, -ER1] |
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