with one's heels raised and one's weight on the balls of the feet, especially in order to move quietly or make oneself taller
踮著腳
Jane stood on tiptoe to kiss him.
簡踮起腳吻他。
Full of anticipation; eager
滿懷期待的；急切的
The children were on tiptoe before the birthday party.
孩子們都急切地等待著生日晚會(huì)的開始