1. One's native language; the language learned by children and passed from one generation to the next
   - mother tongue, first language

Type of: natural language, tongue

• capsize
• capsizing
• capstan
• capstone
• capsula glomeruli
• capsular
• capsulate
• capsulated
• capsule
• capsulise
• capsulitis
• capsulize
• Capt.
• captain
• Captain Bligh
• Captain Bob
• Captain Cook
• Captain Hicks
• Captain Horatio Hornblower
• Captain James Cook
• Captain John Smith
• Captain Kidd
• captain's chair
• captaincy
• captainship