biennial
     adj 1: occurring every second year; "they met at biennial
            conventions" [syn: {biyearly}]
     2: having a life cycle lasting two seasons; "a biennial life
        cycle"; "parsnips and carrots are biennial plants often
        grown as annuals" [syn: {two-year}] [ant: {perennial}, {annual}]
     n : a plant having a life cycle that normally takes two seasons
         from germination to death to complete; flowering
         biennials usually bloom and fruit in the second season
Source: WordNet® 2.0