- propolis
[propolis 词源字典]
- "A red or brown resinous substance collected by honeybees from tree buds, used by them to fill crevices and to fix and varnish honeycombs", Early 17th century: via Latin from Greek propolis 'suburb', also 'bee glue', from pro 'before' + polis 'city'.[propolis etymology, propolis origin, 英语词源]