oibriú, m. (gs. & pl. -ithe).1. vn. of oibrigh. 2. Working; action, operation, activity, agency; agitation, fermentation. ~ talún, mianraí, the working of land, of minerals. ~ hanla, maide lústair, the working of a handle, of a treadle. ~ gréasa, patrúin, the working of a design, of a pattern. ~ scéime, the operation of a scheme. ~ cumhachta, the exercise of power. Le h~ an Spioraid Naoimh, by the operation of the Holy Spirit. ~ cloig, meaisín, the working of a clock, of a machine. ~ teasa ar mhiotal, the action of heat on metal. Ór gan ~, free gold. ~ aicíde ar scamhóga, the action of disease on lungs. ~ intinne, stirrings of the mind; mental unrest. ~ cos, restless movement of feet. Tá ~ ar an uisce, the water is seething. Med:~ (an choirp, na colainne), movement (of bowels). Fin:Rachmas oibrithe, working capital. Mth:Oibrithe le deachúlacha, le codáin, operations with decimals, with fractions.