Source : Webster's Revised Unabridged Dictionary (1913)
7. (Mach.) A joint or other connection uniting parts of
machinery, or the like, as the elastic pipe of a tender
connecting it with the feed pipe of a locomotive engine;
especially, a pipe fitting for connecting pipes, or pipes
and fittings, in such a way as to facilitate
disconnection.
8. (Brewing) A cask suspended on trunnions, in which
fermentation is carried on.
{Hypostatic union} (Theol.) See under {Hypostatic}.
{Latin union}. See under {Latin}.
{Legislative Union} (Eng. Hist.), the union of Great Britain
and Ireland, which took place Jan. 1, 1801.
{Union}, or {Act of Union} (Eng. Hist.), the act by which
Scotland was united to England, or by which the two
kingdoms were incorporated into one, in 1707.
{Union by the first}, or {second}, {intention}. (Surg.) See
{To heal by the first, or second, intention}, under
{Intention}.
{Union down} (Naut.), a signal of distress at sea made by
reversing the flag, or turning its union downward.
{Union jack}. (Naut.) See {Jack}, n., 10.
{Union joint}. (Mech.)
(a) A joint formed by means of a union.
(b) A piece of pipe made in the form of the letter T.
Syn: Unity; junction; connection; concord; alliance;
coalition; combination; confederacy.
Usage: {Union}, {Unity}. Union is the act of bringing two or
more things together so as to make but one, or the
state of being united into one. Unity is a state of
simple oneness, either of essence, as the unity of
God, or of action, feeling, etc., as unity of design,
of affection, etc. Thus, we may speak of effecting a
union of interests which shall result in a unity of
labor and interest in securing a given object.
One kingdom, joy, and union without end.
--Milton.
[Man] is to . . . beget Like of his like, his
image multiplied. In unity defective; which
requires Collateral love, and dearest amity.
--Milton.