Meaning of 便図 in Japanese

It seems that your search contains the following:

Definition of 便図

ず(zu) 【図】

(n, n-suf) drawing; picture; diagram; figure; illustration; chart; graph
図で説明しましょう。
Let me explain it with a diagram.
sight; scene

びん(bin) 【便】

(n, n-suf) flight (e.g. airline flight); trip (e.g. train trip); service
先日便に回虫が出ました。
He had a roundworm in his stool the other day.
mail; post; letter
opportunity; chance

べん(ben) 【便】

よすが(yosuga) · よすか(yosuka) 【縁 ·因 ·便】