This is the 1076th most frequent Polish word.
jakiegoś
"Jakiegoś" means "of some" or "of a certain" in English.
In this sentence, 'jakiegoś' is used as an indefinite pronoun to refer to a non-specific tool needed for repairing the bike.
Potrzebuję jakiegoś narzędzia, żeby naprawić ten rower.
I need some tool to fix this bike.
Here, 'jakiegoś' functions as an indefinite pronoun to inquire about any non-specific pen available for lending.
Czy masz pożyczyć jakiegoś długopisu?
Do you have any pen to lend?
The term 'jakiegoś' in this example refers to any undefined place suitable for resting.