This is the 14722nd most frequent Turkish word.
rastgele
"Rastgele" means "random" or "by chance."
In this sentence, 'rastgele' is used as an adverb to mean 'randomly.' It describes the manner in which the action of choosing a book was performed.
Rastgele bir kitap seçtim ve okumaya başladım.
I randomly picked a book and started reading.
Here, 'rastgele' serves as an adjective to describe 'bir kişi' (a person), specifying that the person is chosen at random.
Kütüphanede rastgele bir kişiyle konuşmak isteyen var mı?
Is there anyone who wants to talk to a random person in the library?
In this instance, 'rastgele' functions as an adverb indicating that the action of throwing the fishing rod was done without prior thought or planning, i.e., randomly.