(music) an interval that is equivalent to a half step

(music) an interval that has no difference between two notes

(politics) A name given to several similar hypothetical scenarios of the unification of Europe, as a single nation and a single federation of states, similar to the United States of America.

an economic union between the Russian Federation, Belarus, Kazakhstan, Armenia and Kyrgyzstan

(US) A high school or high school district that serves students from more than one elementary school district.

plural of union tee

Synonym of mother-in-law apartment

A kirin.

A device used to join two pipes by drawing together flanges fitted over their ends

The narwhal.