slang Relaxing. A portmanteau of "chilling" and "relaxing," often shortened colloquially to "chillaxin'." We're just chillaxin' and watching some TV, if you want to join us. Most of the trip was just chillaxing by the beach and eating great food. It was perfect!
n. a period of relaxing and chilling. (see also chill (sense 6).) What do you mean, I’m chillaxin’? I’m just taking it easy.