Noun

(en noun)

The act of joining, or condition of being joined.

(obsolete) Sexual intercourse.

*, vol.1. ch.29:

Certaine Nations (and amongst others, the Mahometane) abhorre Conjunction with women great with childe.

(grammar) A word used to join other words or phrases together into sentences. The specific conjunction used shows how the two joined parts are related. Example: Bread, butter and cheese.

(astronomy) The alignment of two bodies in the solar system such that they have the same longitude when seen from Earth.

(astrology) An aspect in which planets are in close proximity to one another.

(logic) The proposition resulting from the combination of two or more propositions using the ($\backslash and$) operator.

Noun

(en noun)

(countable) The act of uniting or joining two or more things into one.

(uncountable) The state of being united or joined.

(countable) That which is united, or made one; something formed by a combination or coalition of parts or members; a confederation; a consolidated body; a league.

(countable) A trade union; a workers' union.

* , chapter=22

, title= The Mirror and the Lamp , passage=In the autumn there was a row at some cement works about the unskilled labour men. A union had just been started for them and all but a few joined. One of these blacklegs was laid for by a picket and knocked out of time.}}

(countable) A joint or other connection uniting parts of machinery, such as pipes.

(countable, set theory) The set containing all of the elements of two or more sets.

(countable) The act or state of marriage.

(uncountable, archaic, euphemistic) Sexual intercourse.

(countable, computing) A data structure that can store any of various items, but only one at a time.

A large, high-quality pearl.

*, II.3.3:

Nonius the senator hath a purple coat as stiff with jewels as his mind is full of vices; rings on his fingers worth 20,000 sesterces, andan union in his ear worth an hundred pounds' weight of gold […].