rhubarb

n. （植物）大黄，n./v. 喧闹

rheostat, rhesus, rhetoric, rhetorical, rhetorical question, rhetorically, rheumatic, rheumatic fever, rheumaticky, rheumatics, rheumatism, rheumatoid, rheumatoid arthritis, rhinestone, rhino, rhinoceros, rhizome, rhododendron, rhomboid, rhombus, rhyme, rhymed, rhyming slang, rhythm, rhythm and blues, rhythm method, rhythmic, rhythmically, RI, rib, rib-cage, rib-tickling, ribald, ribaldry, ribbon, ribbon development, riboflavin, rice, rice-paper, rich,