To move silently, stealthily, or furtively.
To act timidly or cautiously.
To use euphemistic language or circumlocution.
To walk quietly with only the tips of the toes touching the ground.
Standing elevated, on or as if on the tips of one's toes.
Moving carefully, quietly, warily or stealthily, on or as if on the tips of one's toes.
The tip of the toe.