What is to open spontaneously, or by pressure from within, as a bubble, a tumor, a seed vessel, a bag. Else the bottle break, and the wine runneth out. Math. ix called?

break — To open spontaneously, or by pressure from within, as a bubble, a tumor, a seed vessel, a bag. Else the bottle break, and the wine runneth out. Math. ix. (Webster's 1913.)