1. (informal) anything complex, detailed or confusing 
2. The science or study of rockets and their design

Encyclopedia: Rocket science

• dotted gayfeather
• dotted line
• dotterel
• dottily
• dottle
• dotty
• hotdog bun
• Hotei
• hotei-chiku
• hotel
• hotel bill
• hotel clerk
• hotel desk clerk
• hotel detective
• hotel manager
• hotel occupancy
• hotel plan
• hotel room
• hotel-casino
• hotelier
• hoteling
• hotelkeeper
• hotelman
• hotfoot
• Hoth