To become heavy, compact, or firm; harden, as land or roads after a thaw or rain.To become sad or sorrowful.To make compact; make heavy or firm; harden.To make sad; depress; make gloomy or melancholy.To make dark-colored; specifically, in dyeing and calico-printing, to tone down or shade (the colors employed) by the application of certain agents, as salts of iron, copper, or bichromate of potash.