1 (a).
electrical conductivity directed into the earth
1 (b). to be emotionally
stable
2 (a). to have your flying privileges suspended
2 (b). to be
confined to your home as a punishment
1(a) The computer wasn't properly grounded, so the power surge fried it.
1(b) I like having lunch with my aunt -- she's so sensible and grounded.
.
2(a) After he did a
victory roll just 200 feet over
the runway,
the Red Baron was grounded for a month.
2(b) When she woke up her whole family by coming in puking-drunk at 4am, Lindsay was grounded for a month.