In sports vocabulary
古典式 is the standard Chinese term for Greco-Roman —
古典式摔跤 (gǔdiǎnshì shuāijiāo) 'Greco-Roman wrestling' (no leg holds), contrasted with
自由式摔跤 (zìyóushì shuāijiāo) 'freestyle wrestling.' Outside sports it just means 'classical-style,' used for furniture, architecture, fashion.