(Britain) hop picking, the practice of picking hops; for Londoners a holiday period working in the hop gardens of Kent.
The addition of hops during the production of beer as a flavouring agent
The act of one who, or that which, hops; a jumping, frisking, or dancing.
(countable, physics) A shift from one energy-state to another by an electron in an atom.
present participle and gerund of hop
(US, slang) Of a location, crowded with people.