The state or quality of mind or spirit that enables one to face danger, fear, or vicissitudes with self-possession, confidence, and resolution; bravery.
Does this word describe what I saw when I watched two people swimming in the Irish Sea this afternoon? One was a man of about 60 or so and the other a young guy, 18-22. The air temperature is in the low 60s F (about 17C), but there is a wind of about 50MPH blowing in off the sea. It was pretty chilly there in my jeans and tee shirt. It was down right freezing just thinking about getting in.
Actually, maybe this is what I saw.