Here's the breakdown:
* Bark: This refers to a ship or boat.
* Moor: To secure a ship or boat in place, usually by attaching it to something on land or underwater.
* Two: This refers to using two anchors, which is considered a more secure method of mooring than using just one.
Therefore, "well to moor your bark with two" suggests that you should take extra precautions and double-check your actions to ensure safety and stability. It's a reminder to be thorough and meticulous, especially when dealing with something important or potentially risky.
The idiom is often used in situations where someone is about to embark on a new venture or make a crucial decision. It is a way to express the need for caution and preparation.