Definition from Wiktionary, the free dictionary
- Rhymes: -əʊn
- Having large numbers of plants which have become too big, and are hence spoiling the picturesqueness of a garden.
- (attributive) Having grown bigger without developing maturity or changing character.
- He spends so much money on new technology: he's like an overgrown schoolboy buying toys.
having large numbers of plants which have become too big
having grown bigger without changing character.