1. Abounding in or bordered by rocky cliffs or scarps
   "the rock-ribbed coast of Maine"
   - rockbound 
2. Tradition-bound and obstinately opinionated
   "rock-ribbed republican"
   - die-hard

See also: inflexible, rough, unsmooth

• low-spirited
• low-spiritedness
• low-sudsing
• low-tech
• low-tension
• low-toned
• low-voltage
• low-warp-loom
• low-water mark
• lowan
• lowball
• lowborn
• lowboy
• lowbred
• lowbrow
• lowbrowed
• lowbush cranberry
• lowbush penstemon
• Lowell
• Lowell Jackson Thomas
• Lowell Thomas
• lower
• lower berth
• lower bound
• Lower California