hopping

Etymology 1

Alternative spelling (C17) of hoppe, from Middle French houbelon

noun

1. (Britain) hop picking, the practice of picking hops; for Londoners a holiday period working in the hop gardens of Kent.
   Hopping Down in Kent, Alan Bignell (1977).
2. The addition of hops during the production of beer as a flavouring agent

Etymology 2

verb

1. present participle and gerund of hop

noun

1. The act of one who, or that which, hops; a jumping, frisking, or dancing.
2. (countable, physics) A shift from one energy-state to another by an electron in an atom.

adj

1. (US, slang) Of a location, crowded with people.