1. A routine trip, especially one involving several stops

Derived forms: milk runs

• polar body
• polar circle
• polar coordinate
• polar front
• polar glacier
• nuclear reactor
• Nuclear Regulatory Commission
• nuclear resonance
• nuclear RNA
• nuclear rocket
• nuclear submarine
• nuclear terrorism
• nuclear transplantation
• nuclear warhead
• nuclear weapon
• nuclear winter
• nuclear-powered ship
• nuclear-powered submarine
• nuclease
• nucleate
• nucleated
• nucleation
• nucleic acid
• nucleolar
• nucleolar organiser