Synonyms of the word

rachis

• n. (botany) The main shaft of either a compound leaf, head of grain, or fern frond.
• n. (zoology, anatomy) The spine or the vertebrae of the spine.
• n. (ornithology) The central shaft of a feather.

axis

• n. (geometry) An imaginary line around which an object spins (an axis of rotation) or is symmetrically arranged…
• n. (mathematics) A fixed one-dimensional figure, such as a line or arc, with an origin and orientation and…
• n. (anatomy) The second cervical vertebra of the spine.
• n. (psychiatry) A form of classification and descriptions of mental disorders or disabilities used in manuals…
• n. (botany) The main stem or central part about which organs or plant parts such as branches are arranged.
• n. Axis axis, a deer native to Asia.

back

• adj. (not comparable) Near the rear.
• adj. (not comparable) Not current.
• adj. (not comparable) Far from the main area.
• adj. In arrear; overdue.
• adj. Moving or operating backward.
• adj. (comparable, phonetics) Produced in the back of the mouth.
• adv. (not comparable) To or in a previous condition or place.
• adv. Away from the front or from an edge.
• adv. In a manner that impedes.
• adv. In a reciprocal manner.
• n. The rear of the body, especially the part between the neck and the end of the spine and opposite the chest…
• n. That which is farthest away from the front.
• n. (figuratively) Upper part of a natural object which is considered to resemble an animal's back.
• n. A support or resource in reserve.
• n. (nautical) The keel and keelson of a ship.
• n. (mining) The roof of a horizontal underground passage.
• n. (slang, uncountable) Effort, usually physical.
• n. A non-alcoholic drink (often water or a soft drink), to go with hard liquor or a cocktail.
• n. Among leather dealers, one of the thickest and stoutest tanned hides.
• v. (intransitive) To go in the reverse direction.
• v. (transitive) To support.
• v. (nautical, of the wind) To change direction contrary to the normal pattern; that is, to shift anticlockwise…
• v. (nautical, of a square sail) To brace the yards so that the wind presses on the front of the sail, to…
• v. (nautical, of an anchor) To lay out a second, smaller anchor to provide additional holding power.
• v. (Britain, of a hunting dog) To stand still behind another dog which has pointed.
• v. (transitive) To push or force backwards.
• v. (transitive, obsolete) To get upon the back of; to mount.
• v. (transitive, obsolete) To place or seat upon the back.
• v. To make a back for; to furnish with a back.
• v. To adjoin behind; to be at the back of.
• v. To write upon the back of, possibly as an endorsement.
• v. (law, of a justice of the peace) To sign or endorse (a warrant, issued in another county, to apprehend…
• v. To row backward with (oars).
• n. A large shallow vat; a cistern, tub, or trough, used by brewers, distillers, dyers, picklers, gluemakers,…
• n. A ferryboat.

backbone

• n. The series of vertebrae, separated by disks, that encloses and protects the spinal cord, and runs down…
• n. Any fundamental support, structure, or infrastructure.
• n. Courage, fortitude, or strength.

spine

• n. The series of bones situated at the back from the head to the pelvis of a person, or from the head to…
• n. Something resembling a backbone, such as a ridge, or a long, central structure from which other structures…
• n. A pointed, fairly rigid protuberance or needle-like structure on an animal, shell, or plant.
• n. (figuratively) Courage or assertiveness.
• n. The stiffness of an arrow.