a framework of ribs
the act of harassing someone playfully or maliciously (especially by ridicule); provoking someone with persistent annoyances;
"he ignored their teases"
"his ribbing was gentle but persistent"
- His ribbing was gentle but persistent.
She had begun Johnny's second stocking and almost finished the ribbing at the top.出自： P. Wentworth
The main frame is..made with strong ribbing to maintain rigidity.出自：Practical Woodworking