- each of the two upper limbs of the human body from the shoulder to the hand；a flexible limb of an invertebrate animal, e.g. an octopus.
noun: arm, plural noun: arms
- 1. each of the two upper limbs of the human body from the shoulder to the hand:
she held the baby in her arms
- 2. a flexible limb of an invertebrate animal, e.g. an octopus.
- 3. a sleeve of a garment.
- 4. an ability to bowl, pitch, or throw a ball skilfully:
he has a good arm
- 5. used to refer to the holding of a person's arm in support or companionship:
as they walked he offered her his arm
I'm so proud to have you on my arm
- 6. used to refer to something powerful or protective:
they have extended the arm of friendship to developing countries
- 7. a thing comparable to an arm in form or function, typically something that projects from a larger structure:
cables will secure the boom to steel arms installed near the top of the tower
a cat was curled up on an arm of the tree
- 8. a side part of a chair or other seat on which a sitter can rest their arm:
he draped his legs over the arm of the sofa
a large walnut desk chair with padded arms
- 9. a narrow strip of water or land projecting from a larger body:
the whole place is divided into two equal parts by an arm of the sea
- 10. a branch or division of a company or organization:
the political arm of the separatist group
- 11. each of the types of troops of which an army is composed, such as infantry or artillery.
- 12. each of the lines enclosing an angle.