serrated

1. ADJ A serrated object such as a knife or blade has a row of V-shaped points along the edge. (刀或刀片)呈鋸齒狀的; 呈蛇尖狀的[usu ADJ n]

Bread knives should have a serrated edge. 麪包刀的刀刃應帶有波浪齒。