
1) Horse with a three-beat gait
Found on
https://www.crosswordclues.com/clue/galloper

• (n.) A carriage on which very small guns were formerly mounted, the gun resting on the shafts, without a limber. • (n.) One who, or that which, gallops.
Found on
http://thinkexist.com/dictionary/meaning/galloper/
Gal'lop·er noun 1. One who, or that which, gallops.
2. (Mil.) A carriage on which very small guns were formerly mounted, the gun resting on the shafts, without a limber.
Farrow. Galloper gun ,
a light gun, supported on a galloper, -- formerly attached to Bri...
Found on http://www.encyclo.co.uk/webster/G/5
Galloper was British slang for a merry-go-round (carousel).
Found on http://www.probertencyclopaedia.com/browse/ZG.HTM
gallop: (dialect) To boil quickly. Hence galloped beer - 'small beer for present drinking made by simple boiling, or, as it is called, galloping, small quantities of hops and malt together in a kettle.' (Forby, Vocabulary of East Anglia, 1825). Presumably the kettle used to make galloped beer (CD).
Found on http://www2.shu.ac.uk/sfca/glossary.cfm
No exact match found.