in Mechanics, is properly a piston, without a valve. For by drawing up such a piston, the air is drawn up, and the water follows; then pushing the piston down again, the water, being prevented from descending by the lower valve, is forced up to any height above, by means of a side branch between the two.

FORCIBLE ENTRY, is a violent and actual entry into houses or lands; and a forcible detainer, is where one by violence withholds the possession of lands, &c., so that the person who has a right of entry is barred, or hindered, therefrom.

At common law, any person that had a right to enter into lands, &c., might retain possession of it by force. But this liberty being abused, to the breach of the peace, it was therefore found necessary that the same should be restrained: Though, at this day, he