に当たって[niatatte] at the time of (ind. opportunity or situation where something should be done)
一騎当千[ikkitousen] being a match for a thousand
一指当たり[ichiyubiatari] span
一人当たり[hitoriatari] per person
一人当て[hitoriate] per person

引当[hikiate] mortgage
引当金[hikiatekin] reserves
押し当てる[oshiateru] to push (something) against
穏当[ontou] proper
過当[katou] excessive

一芸[ichigei] an art
隠し芸[kakushigei] hidden talent
園芸[engei] horticulture
演芸[engei] entertainment
学芸[gakugei] arts and sciences

曲芸[kyokugei] acrobatics
曲芸師[kyokugeishi] acrobat
芸者[geisha] geisha
芸術[geijutsu] (fine) art
芸術家[geijutsuka] artist