Akademik

К-357
ЧЕРЕЗ КРАЙ чего coll PrepP Invar usu. quantit subj-compl with copula ( subj / gen : abstr or concr)) ( s.o. has or in some place there is) a very large quantity or excessive amount of sth. : limitless without limit enough and to spare (in refer, to undesirable things, often personality traits considered undesirable when present to an excessive degree) far too much.
Мама ведёт активный образ жизни, энергии у нее через край. Mom leads a very active life, she has energy enough and to spare.

Большой русско-английский фразеологический словарь. — М.: ACT-ПРЕСС КНИГА. . 2004.