Chat/tʃæt/ Definition 1 of 4Pro Tip 1/3Casual Interactions 'Chat' suggests a relaxed conversation without seriousness or formality. Let's have a chat over coffee sometime! Pro Tip 2/3Duration A chat usually refers to a short interaction, not a long or detailed one. I had a quick chat with Luna about the weekend plans. Pro Tip 3/3Not Always Trivial Despite being informal, a chat can cover meaningful topics in an accessible manner. We had an insightful chat about wellness and self-care.