Obsolete form of first.

plural of bridge route

(chemistry) The precipitation of an otherwise soluble substance through the precipitation of another substance.

Brassica rapa subsp. narinosa (syns. Brassica narinosa, Brasica rapa var. narinosa, Brassica rapa var. rosularis), an Asian variety of Brassica rapa grown for greens, lately popular in North Americ...