any projection that is thought to resemble a human arm | electrical conduction through a gas in an applied electric field |
the graduated arc that is attached to an instrument for measuring angles | a continuous portion of a circle |
either of the two halves of a bow from handle to tip | something curved in shape |
one of the jointed appendages of an animal used for locomotion or grasping: arm, leg, wing, flipper | |
(astronomy) the circumferential edge of the apparent disc of the sun or the moon or a planet | |
any of the main branches arising from the trunk or a bough of a tree | |