| adenoid |
(usually plural) a mass of tissue that grows behind the nose in the upper part of the throat. When swollen, the adenoids can make breathing difficult. |
| adenovirus |
any of a group of viruses that causes disease of the upper respiratory tract. |
| advantage |
a better chance or position; upper hand. [1/2 definitions] |
| aerology |
the branch of meteorology that deals with the entire atmosphere, esp. the upper atmosphere. |
| aircraft carrier |
a very large warship with a flat upper deck on which airplanes can take off and land. |
| angulation |
in skiing, a body position in which the knees and upper body lean into the hill while weight is placed on the downhill ski. [1/3 definitions] |
| antrum |
a cavity within a bone, such as the pair of sinuses in the upper jaw that open into the nose. |
| aristocracy |
a class of people who have a high social position because of the family they are born into. Members of the aristocracy are usually richer and have more privileges than other members of society. [1/2 definitions] |
| arm1 |
either of the two upper limbs of the human body, between the shoulders and the wrists. [1/3 definitions] |
| armband |
a cloth band worn around the upper arm as a badge of rank, membership, or the like, or as a symbol, as of mourning. |
| armlet |
a band worn as an ornament, usu. on the upper arm. [1/2 definitions] |
| atrium |
either of the two upper compartments of the heart; auricle. Blood returning from the body flows into the atria, which pump the blood to the ventricles, the lower compartments of the heart. [1/2 definitions] |
| auricle |
an earlike projection of either of the two upper chambers of the heart, or one of the chambers itself; atrium. [1/3 definitions] |
| axil |
the upper angle between a leaf, flower, twig, or the like, and the stem or branch from which it grows. |
| balcony |
an upper floor with rows of seats that juts out into a theater or auditorium. [1/2 definitions] |
| baleen |
the bony, flexible strips in the upper jaws of whales that feed by filtering food from ocean water. These whales use baleen to strain large amounts of small food such as shrimp from the water. |
| bar sinister |
in heraldry, a bar on a shield that runs diagonally from lower left to upper right, signifying an illegitimate ancestor; bend sinister. [1/3 definitions] |
| bend |
to lean your upper body from the waist. [1/4 definitions] |
| bend sinister |
in heraldry, a diagonal band from the lower left to the upper right of a shield, signifying bastardy; bar sinister. |
| bib |
the upper part of an apron that protects the clothing. [1/2 definitions] |
| biceps |
the large muscle at the front of the upper arm that bends the elbow. |