Impregnable

1.

ដែលមិនអាចបដិសេធបាន, ដែលមិនអាចទប់តល់បាន impregnable fortress ដែលមិនអាចវាយយកបាន, impregnable argument ដែលបដិសេធចោលមិនបាន

1.

Capable of being impregnated, as the egg of an animal, or the ovule of a plant.

2.

Not to be stormed, or taken by assault; incapable of being subdued; able to resist attack; unconquerable; as, an impregnable fortress; impregnable virtue.