washing-soda

n [U] = sodium carbonate (sodium).

wash basin, wash out (of a dirty mark), wash over sb, wash sth down (with sth), wash up, wash-cloth, wash-day, wash-drawing, wash-leather, wash-out, wash-stand, wash-tub, washable, washboard, washed out, washed up, washer, washing, washing-machine, washing-powder, washing-up, Washington, Washington D.C., washroom, washtub, washwoman, washy, wasn't, wasp, WASP (also Wasp), wasp-waisted, waspish, waspishly, waspishness, wassail, wastage, waste, waste on, waste product, waste-basket (also `waste-bin),