1. A beneficial bacterium found in the intestinal tract of healthy mammals; often considered to be a plant
   - probiotic, probiotic microflora, probiotic flora

Type of: bacteria, bacterium

• railway car
• railway carriage
• railway junction
• railway line
• railway locomotive
• railway siding
• railway station
• railway system
• railway track
• railway train
• railway tunnel
• railway yard
• railwayman
• railyard
• raiment
• raimentless
• rain
• rain barrel
• rain buckets
• rain cats and dogs
• rain check
• rain cloud
• rain dance
• rain date
• rain down