The craft of gesture is part of the practical equipment with which we inhabit and understand the world together. Drawing on micro-ethnographic research in diverse interaction settings, this book explores the communicative ecologies in which hand-gestures appear: illuminating the world around us, depicting it, making sense of it, and symbolizing the interaction process itself. Gesture is analyzed as embodied communicative action grounded in the hands' practical and cognitive engagments with material worlds. The book responds to the quest for the role of the human body in cognition and interaction with an analytic perspective informed by phenomenology, conversation analysis, context analysis, praxeology, and cognitive science.