limb

Concise Oxford English Dictionary © 2008 Oxford University Press:
limb1

▶noun

• 1 an arm, leg, or wing.

• 2 a large branch of a tree.

  ■ a branch of a cross.

• 3 a projecting landform such as a spur of a mountain range.

  ■ a projecting section of a building.

– phrases
life and limb life and bodily faculties.
out on a limb in a position not supported by anyone else.
tear someone limb from limb violently dismember someone.

– derivatives
-limbed adjective,
limbless adjective.

– origin OE lim, of Gmc origin.

Concise Oxford English Dictionary © 2008 Oxford University Press:
limb2

▶noun

• 1 Astronomy a specified edge of the disc of the sun, moon, or other celestial object.

• 2 Botany the blade or broad part of a leaf or petal.

  ■ the spreading upper part of a tube-shaped flower.

• 3 the graduated arc of a quadrant or other scientific instrument.

– origin ME: from Fr. limbe or L. limbus ‘hem, border’.