biennial /bī-enˈi-əl or -enˈyəl/

1. Lasting two years
2. Happening or appearing once in two years

1. A plant that flowers and fruits only in its second year, then dies
2. An event taking place or being celebrated every two years

• dewinesses
• dewing
• dewitt
• dewitted
• dewitting
• dewitts
• dewlap
• dewlapped
• dewlaps
• dewlapt
• DEW line
• deworm
• dewormed
• dewormer
• dewormers
• deworming
• deworms
• dewpoint
• dewpoints
• dew-pond
• dew-ponds
• dew-retting
• dews
• dew worm
• dew worms