Meaning of WAG in English
/ wæg; NAmE / verb , noun
■ verb ( -gg- )
[ v , vn ] if a dog wags its tail, or its tail wags , its tail moves from side to side several times
[ vn ] to shake your finger or your head from side to side or up and down, often as a sign of disapproval
[ vn ] ( AustralE , NZE ) to stay away from school without permission :
to wag school
see tail noun , tongue noun
( old-fashioned , especially BrE ) a person who enjoys making jokes
a wagging movement
verb and noun sense 2 Middle English (as a verb): from the Germanic base of Old English wagian to sway .
noun sense 1 mid 16th cent. (denoting a young man or mischievous boy, also used as a term of endearment to an infant): probably from obsolete waghalter person likely to be hanged (from the verb wag and halter ).
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005