ÇÍÀÒÜ ÷òî-ëèáî ÂÄÎËÜ È ÏÎÏÅÐÅÊ

Ïåðåëèñòíóòü ñòðàíèöó

[znat' vdol' i pop'er'ok]

To know something lengthwise and crosswise.

To know something thoroughly in all its details.

Cf. To know something inside out.