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

• goal difference
• goaled
• goalie
• goalies
• goaling
• goalkeeper
• goalkeepers
• goalkeeping
• goal kick
• goalkicker
• goalkickers
• goalkicking
• goalkickings
• goal kicks
• goalless
• goal line
• goal lines
• go all out for
• go all the way
• goalmouth
• goalmouths
• go along with
• go along with you
• goalpost
• goalposts