ちょっと一杯[chottoippai] let's have a quick drink
ばつ一[batsuichi] being once divorced
一向[hitaburu] nothing but
サラダ一皿[saradahitosara] plate of salad

安全第一[anzendaiichi] safety first
一か八か[ichikabachika] sink or swim
一っ走り[hitoppashiri] spin (as in 'take a car for a spin')
一つ一つ[hitotsuhitotsu] one-by-one

育成栽培[ikuseisaibai] vegetable and fruit growing
栽培[saibai] cultivation
栽培種[saibaishu] agricultural species
栽培所[saibaijo] plantation
純粋培養[junsuibaiyou] clean (pure) culture

促成栽培[sokuseisaibai] raising out-of-season crops with artificial heat
培う[tsuchikau] to cultivate
培養[baiyou] cultivation
培養液[baiyoueki] culture fluid
培地[baichi] culture medium

夏季休暇[kakikyuuka] summer vacation
季刊[kikan] quarterly (e.g. magazine)
季語[kigo] seasonal word (in haiku)
季候[kikou] season
季節[kisetsu] season

季節はずれ[kisetsuhazure] unseasonable
季節的[kisetsuteki] seasonal
季節風[kisetsufuu] seasonal winds
四季[shiki] four seasons
冬季[touki] (season of) winter