PCB

1. Polychlorinated biphenyl, any of several compounds with various industrial applications, regarded as environmental pollutants
2. Printed circuit board

• frogman
• frogmarch
• frogmarched
• frogmarches
• frogmarching
• frogmen
• frogmouth
• frogmouths
• frogs
• frog's lettuce
• frog's-march
• frog's-mouth
• frogspawn
• frogspawns
• frog-spit
• frog-spits
• frog test
• frog tests
• froideur
• froideurs
• froise
• froises
• frolic
• frolicked
• frolicking