nicker⁴ /nikˈər/

1. A clay marble (also knicker)
2. The round seed of a Caesalpinia (or Guilandina if this is considered a separate genus), used for playing marbles (also nickˈar)

• bubble baths
• bubble car
• bubble cars
• bubble chamber
• bubble chambers
• bubbled
• bubble gum
• bubble gums
• bubble-headed
• bubble-jet printer
• bubble-jet printers
• bubble memory
• bubble over
• bubble pack
• bubble packs
• bubbler
• bubblers
• bubbles
• bubble-shell
• bubble-shells
• bubble sort
• bubble under
• bubble wrap
• bubblier
• bubblies