| abeam |
at right angles to a line passing from the front to the back of a ship. |
| Achilles tendon |
the large tendon that connects the calf muscles to the back of the heel. |
| acne |
a skin condition that makes pimples appear on the face, back, or chest. It happens when oil glands in the skin are blocked. |
| aftermost |
nearest the back or stern, as on a ship; farthest aft. |
| agitation |
the act or process of stirring up something, forcing it to move around or back and forth. [1/2 definitions] |
| altazimuth |
a telescope or other instrument that moves in altitude (up and down) and in azimuth (back and forth). |
| alternate |
to move back and forth between two or more places, actions, or conditions (usually followed by "between"). [1/7 definitions] |
| ana- |
back or backward. [1/4 definitions] |
| antimacassar |
a covering, usu. decorative, used on the back or arms of a chair or sofa to protect the upholstery. |
| archive |
a collection of records or information that is stored somewhere. An archive often stores things that go back a long time. |
| arm wrestling |
a contest in which each of two opponents places either the right or the left elbow on a table with the forearm vertical, clasps the opponent's hand, and tries to force the opponent's hand back until it touches the table; Indian wrestling. |
| arytenoid |
of or pertaining to either of a pair of small cartilages at the back of the larynx to which the vocal chords are attached. [1/3 definitions] |
| ascent |
a movement back towards one's origins or up from one's origins. [1/4 definitions] |
| astern |
toward the back or rear of a boat or aircraft; backwards. [1/2 definitions] |
| back |
to cause something to move with its back part first. [1/8 definitions] |
| backache |
a pain in the back, esp. a persistent one in the lower back. |
| backbone |
the row of bones that runs along the center of the back; spine. [1/2 definitions] |
| backed |
having a back or support (often used in combination). |
| background |
the part of a picture or scene that is toward the back or seems to be far away. [1/2 definitions] |
| backhand |
a tennis stroke that involves a forward movement of the arm with the back of the hand outward. |
| backing |
anything that forms or is put on the back of something, esp. as a cover or support. [1/3 definitions] |