| any projection that is thought to resemble a human arm | a stroke with a curved piece of wood with taut horsehair strands that is used in playing stringed instruments |
| the graduated arc that is attached to an instrument for measuring angles | a slightly curved piece of resilient wood with taut horsehair strands; used in playing certain stringed instruments |
| either of the two halves of a bow from handle to tip | a weapon for shooting arrows, composed of a curved piece of resilient wood with a taut cord to propel the arrow |
| one of the jointed appendages of an animal used for locomotion or grasping: arm, leg, wing, flipper | a knot with two loops and loose ends; used to tie shoelaces |
| (astronomy) the circumferential edge of the apparent disc of the sun or the moon or a planet | a decorative interlacing of ribbons |
| any of the main branches arising from the trunk or a bough of a tree | something curved in shape |
| | front part of a vessel or aircraft |
| | an appearance by actors or performers at the end of the concert or play in order to acknowledge the applause of the audience |
| | bending the head or body or knee as a sign of reverence or submission or shame or greeting |