under cover

Also found in: Dictionary, Thesaurus, Medical, Financial, Idioms, Encyclopedia, Wikipedia.
See: safe
References in classic literature ?
He kept stepping forward under cover of his shield in every direction, making trial of the ranks to see if they would give way before him, but he could not daunt the courage of the Achaeans.
Neutrogena Under Cover Concealer in Yellow and in Green, $6.