LASSO Meaning of LASSO in English n. & v. --n. (pl. -os or -oes) a rope with a noose at one end, used esp. in N. America for catching cattle etc. --v.tr. (-oes, -oed) catch with a lasso. Derivatives: lassoer n. Etymology: Sp. lazo LACE Oxford English vocab. Оксфордский английский словарь. 2012