barbican /bärˈbi-kən/

1. A projecting watchtower over the gate of a castle or fortified town
2. Esp the outwork intended to defend the drawbridge

• offsprings
• off-stage
• off-stream
• off-street
• offtake
• offtakes
• off the air
• off the beam
• off the beaten track
• off the bit
• off the bone
• off the charts
• off the cuff
• off the face
• off the grid
• off the ground
• off the hinges
• off the hook
• off the hooks
• off-the-job training
• off the map
• off the mark
• off the peg
• off-the-peg
• off the rails