rigol or rigoll /rigˈəl/

1. A gutter or water channel
2. A groove, esp an encircling groove
3. A circlet (Shakespeare)

• interactive compact discs
• interactively
• interactive television
• interactive whiteboard
• interactivity
• interactome
• interactomes
• interacts
• inter alia
• inter alios
• interallied
• interambulacra
• interambulacral
• interambulacrum
• interatomic
• interbank
• interbedded
• interbedding
• interbeddings
• interbrain
• interbrains
• interbred
• interbreed
• interbreeding
• interbreedings