rhu ‧ barb /ˈruːbɑːb $ -ɑːrb/ BrE AmE noun [uncountable]
[ Date: 1300-1400 ; Language: Old French ; Origin: reubarbe , from Medieval Latin reubarbarum , from rha 'rhubarb' (from Greek ) + barbarus 'foreign' ]
1 . a plant with broad leaves. It has thick red stems that can be cooked and eaten.
2 . spoken a word repeated by actors to make a sound like many people talking