dàotóu
雖有諸說。而以畢竟究極之義為是。
At the end, when the end is reached.
to the end (of); at the end of; in the end; to come to an end
一到頭 禪林用語。即到底。有徹底、結局、終極之意。引申為：佛教中雖有諸種說法，然以畢竟究極之義為正道、為終極。此外，禪林中有「到頭無諱」一語，係闡明洞山五位中，圓融無礙之「兼中道」要旨之用語；謂已無言語之障礙，能一無顧忌的說法。〔虛堂和尚語錄卷一〕p3884