What is terminated abruptly, or as it bitten off. Premorse root or leaves (Bot.), such as have an abrupt, ragged, and irregular termination, as if bitten off short called?

premorse — Terminated abruptly, or as it bitten off. Premorse root or leaves (Bot.), such as have an abrupt, ragged, and irregular termination, as if bitten off short. (Webster's 1913.)