hopping

from The Century Dictionary.

• noun The act or occupation of picking hops from the vines; hop-picking.
• noun The act of one who hops or dances. Specifically
• noun A dance; a hop; a country fair or wake at which dancing is a principal amusement.
• noun A game of prison-bars, in which the players hop throughout the game.

from the GNU version of the Collaborative International Dictionary of English.

• noun The act of one who, or that which, hops; a jumping, frisking, or dancing.
• noun (Zoöl.) a thrush of Jamaica (Merula leucogenys), resembling the English blackbird in its familiar manners, agreeable song, and dark plumage.
• noun A gathering of hops.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun uncountable, UK hop picking, the practice of picking hops; for Londoners a holiday period working in the hop gardens of Kent.
• verb Present participle of hop.
• noun countable, physics A shift from one energy-state to another by an electron in an atom.