5. The part opposite to, or most remote from, that which fronts the speaker or actor; or the part out of sight, or not generally seen; as, the back of an island, of a hill, or of a village.
6. The part of a cutting tool on the opposite side from its edge; as, the back of a knife, or of a saw.
7. A support or resource in reserve. This project Should have a back or second, that might hold, If this should blast in proof. Shak.
8. (Naut.)
Defn: The keel and keelson of a ship.
9. (Mining)
Defn: The upper part of a lode, or the roof of a horizontal underground passage.
10. A garment for the back; hence, clothing. A bak to walken inne by daylight. Chaucer. Behind one's back, when one is absent; without one's knowledge; as, to ridicule a person behind his back. — Full back, Half back, Quarter back (Football), players stationed behind those in the front line. — To be or lie on one's back, to be helpless. — To put, or get, one's back up, to assume an attitude of obstinate resistance (from the action of a cat when attacked.). [Colloq.] — To see the back of, to get rid of. — To turn the back, to go away; to flee. — To turn the back on one, to forsake or neglect him.
BACK
Back, a.
1. Being at the back or in the rear; distant; remote; as, the back door; back settlements.