no obj.
1- sleep lightly打瞌睡, 打盹儿; 半睡：
he found his mother dozing by the fire.
他发现母亲正在炉边打瞌睡。
1.1
doze off
fall lightly asleep打盹儿：I dozed off for a few seconds.
我打了一会儿盹。
词源
mid 17th cent. （in the sense 'stupefy, bewilder, or make drowsy'）： perhaps related to Danish døse 'make drowsy'.