—n. 1. the tip or end of a toe.
2. on tiptoe, a. on the tips of one's toes.
b. expectant; eager: With Christmas coming, the children were on tiptoe. c. stealthily; cautiously: The concert had already begun, so he entered the back of the hall on tiptoe.
—v.i. to move or go on tiptoe, as with caution or stealth: She tiptoed out of the room.
—adj. 1. characterized by standing or walking on tiptoe.
2. straining upward.
3. eagerly expectant.
4. cautious; stealthy.