plural arms
Definition of arm
(Entry 1 of 5)
1
: a human upper limb
especially
: the part between the shoulder and the wrist
2
: something like or corresponding to an arm: such as
a
: the forelimb of a vertebrate
b
: a limb of an invertebrate animal
c
: a branch or lateral shoot of a plant
d
: a slender part of a structure, machine, or an instrument projecting from a main part, axis, or fulcrum
e
: the end of a ship's yard
also
: the part of an anchor from the crown to the fluke — see anchor illustration
f
: any of the usually two parts of a chromosome lateral to the centromere
3
: an inlet of water (as from the sea)
4
: a narrow extension of a larger area, mass, or group
6
: a support (as on a chair) for the elbow and forearm
7
: sleeve
8
: the ability to throw or pitch a ball well
also
: a player having such ability
9
: a functional division of a group, organization, institution, or activity
the logistical arm of the air force
10
medical
: a group of subjects provided a particular treatment in a clinical trial
Since this trial did not include a radiation-only treatment arm, it has been questioned whether radiation therapy alone might be as effective as sequential chemotherapy and radiation therapy in preserving the larynx.— Everett E. Vokes et al.
arm in arm
: with arms linked together
arm
verb
armed; arming; arms
Definition of arm (Entry 2 of 5)
1
: to furnish or equip with weapons
2
: to furnish with something that strengthens or protects
arming citizens with the right to vote
3
: to equip or ready for action or operation
arm a bomb
: to prepare oneself for struggle or resistance
arm for combat
Definition of arm (Entry 3 of 5)
b
: a combat branch (as of an army)
c
: an organized branch of national defense (such as the navy)
2
arms plural
a
: the hereditary heraldic devices of a family
b
: heraldic devices adopted by a government
up in arms
: aroused and ready to undertake a fight or conflict
Arm
abbreviation (1)Definition of Arm (Entry 4 of 5)
Armenian
ARM
abbreviation (2)Definition of ARM (Entry 5 of 5)
adjustable rate mortgage
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Merriam-Webster unabridged
Share arm
Time Traveler for arm
The first known use of arm was before the 12th century
See more words from the same century