"overgrown" in the verb sense
1. overgrow
grow too large
2. overgrow
become overgrown
"The patio overgrew with ivy"
3. overgrow, grow over
grow beyond or across
"The ivy overgrew the patio"
"overgrown" in the adjective sense
1. overgrown
covered with growing plants
2. overgrown
abounding in usually unwanted vegetation
Source: WordNet® (An amazing lexical database of English)
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