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

biennˈially adverb

• pullers
• pullet
• pullets
• pullet-sperm
• pulley
• pulleys
• pull faces at
• pull for
• pull in
• pull-in
• pulling
• pull in one's horns
• pull-ins
• Pullman
• Pullman car
• Pullman cars
• Pullmans
• pull off
• pull-on
• pull oneself together
• pull oneself up by one's bootstraps
• pull oneself up by one's own bootstraps
• pull one's finger out
• pull one's punches
• pull one's weight