This is the 10703rd most frequent Turkish word.
dalga
"Dalga" means "wave" in English.
In this sentence, "dalga" is used to mean 'wave', referring to the motion of water surfaces.
Denizde büyük bir dalga çıktı.
A large wave appeared in the sea.
Here, "dalga geçmek" is an idiomatic expression meaning 'to make fun or joke about someone or something'.
Arkadaşım hep benimle dalga geçiyor.
My friend always makes fun of me.
"Dalga" refers to 'wave' in the context of physics, specifically radio frequency waves.