1. Any important early teacher of Christianity or a Christian missionary to a people
   - Apostle

Type of: Christian

• sign painter
• sign up
• signage
• signal
• signal box
• signal caller
• signal detection
• signal fire
• signal flag
• signal level
• signal light
• signal tower
• signal-to-noise
• signal-to-noise ratio
• signal/noise
• signal/noise ratio
• signaler
• signaling
• signaling device
• signalisation
• signalise
• signalization
• signalize
• signaller
• signalling