potlatch, also potlach /potˈlach/

1. In NW USA, a Native American winter festival, the occasion for emulation in extravagant gift-giving and, in one tribe, even property-destruction
2. Any feast or gift (informal)

• offshore purchase
• offshore purchases
• offshores
• offshoring
• offside
• offsider
• offsiders
• offsides
• off-site
• off-sorts
• off spin
• off-spin
• off spinner
• off spinners
• offspring
• offsprings
• off-stage
• off-stream
• off-street
• offtake
• offtakes
• off the air
• off the beam
• off the beaten track
• off the bit