OPEN-HEADED
O"pen-head`ed, a.

Defn: Bareheaded. [Obs.]

OPEN-HEARTED
O"pen-heart`ed, a.

Defn: Candid; frank; generous. Dryden.
— O"pen-heart`ed*ly, adv.
— O"pen-heart`ed*ness, n. Walton.

OPEN-HEARTH STEEL
Open-hearth steel.

Defn: See under Open.

OPENING
O"pen*ing, n.

1. The act or process of opening; a beginning; commencement; first appearance; as, the opening of a speech. The opening of your glory was like that of light. Dryden.

2. A place which is open; a breach; an aperture; a gap; cleft, or hole. We saw him at the opening of his tent. Shak.

3. Hence: A vacant place; an opportunity; as, an opening for business. [Colloq.] Dickens.