(astronomy, physics) dark matter comprising elementary particles whose composition is as yet unknown, but is presumed to be unlike normal protons, neutrons and electrons etc.

A type of rope halter specifically designed to be used for riding horses. It is considered a type of bitless bridle. Ithas two rings set low on the noseband for the purpose of attaching reins. Hors...

A bee (or other creature) that occupies the same hive as another.

Alternative spelling of through-ticketing