the 4th of the twelve earthly branches, associated with the rabbit, the time 5–7 a.m., and the direction east

卯时天还没亮透。

to concentrate or focus one's energy or strength on a task

他卯足了劲，一定要把这道题解出来。

a slot or hole cut into a piece of wood or stone to receive a matching tenon

这件家具采用了传统的榫卯结构。