OPEN
O"pen, v. i.

1. To unclose; to form a hole, breach, or gap; to be unclosed; to be
parted.
The earth opened and swallowed up Dathan, and covered the company of
Abiram. Ps. cvi. 17.

2. To expand; to spread out; to be disclosed; as, the harbor opened to our view.

3. To begin; to commence; as, the stock opened at par; the battery opened upon the enemy.

4. (Sporting)

Defn: To bark on scent or view of the game.

OPEN-AIR
O"pen-air`, a.

Defn: Taking place in the open air; outdoor; as, an open-air game or meeting.

OPENBILL
O"pen*bill`, n. (Zoöl.)

Defn: A bird of the genus Anastomus, allied to the stork; — so called because the two parts of the bill touch only at the base and tip. One species inhabits India, another Africa. Called also open- beak. See Illust. (m), under Beak.