This is the 10178th most frequent German word.
pflaume
Plum.
Here 'pflaume' refers to the fruit, commonly eaten fresh or used in cooking.
Ich esse gerne frische Pflaumen.
I like eating fresh plums.
In this sentence, 'pflaume' specifies a single plum and relates to the idea of maturity or ripeness.
Die Pflaume am Baum ist noch nicht reif.
The plum on the tree is not ripe yet.
Here 'pflaume' is used metaphorically in a colloquial expression, referring to a person exhibiting clumsiness or ineffectiveness.