arm

Elbow's home territory

The appendage that begins at your shoulder and ends at your hand inspires the many uses of the word arm.

Animals whose uppermost or foremost limbs are distinct also have arms.

A limb that does not typically touch with the ground is also an arm, which may be why invertebrates such as squid and octopi have arms but spiders and insects have legs.

Figuratively speaking, an arm is one of multiple divisions of an organization: the retail arm of the corporation.

Arm is commonly a shortened version of firearm, and so arms can refer to weapons.

When someone is armed, they are carrying a weapon.

limb

shoulder

Upper arm joint

elbowArm's middle joint
wristHand-forearm connection
handGrasping body part

biceps · triceps · fingers · joints · muscles · bones · tendons · ligaments · veins · nerves

grasp

grip

Secure manual hold

clutchMechanism linking engine to gearbox
holdMaintain in grasp
seizeTake suddenly, forcibly

clasp · reach · grab · catch · clench · squeeze · grapple · embrace · stretch · extend

authority

enforcement

Compelling compliance with rules

powerEnergy transfer rate
controlAuthority to direct
jurisdictionLegal authority's scope

coercion · muscle · influence · leverage · force · compel · pressure · intimidate

embrace

hug

Tight, affectionate clasp

cuddleAffectionate close embrace
holdMaintain in grasp
wrapEnclose by winding around

enfold · cradle · squeeze · clasp · comfort · warmth · affection · tenderness · snuggle · caress

reach

extension

Added part or duration

spanDistance between endpoints
lengthMeasure of extent
stretchPull to extend

scope · range · distance · radius · expanse · wingspan · branch · inlet · tributary · estuary

mechanism

lever

Pivoting bar for lifting

crankRotary operating handle
boomLoud deep sound
jibTriangular sail forward

bracket · extension · crane · robotic · actuator · manipulator · hydraulic · pneumatic · armature · spindle

weapon

firearm

Projectile weapon using explosives

rifleLong-barreled shoulder weapon
pistolCompact one-handed firearm
cannonLarge mounted gun

missile · artillery · gun · musket · mortar · launcher · torpedo · warhead · ammunition · munitions

military

troops

Military personnel collectively

infantryGround combat troops
battalionMid-sized military unit
regimentColonel-led military unit

division · platoon · squad · brigade · cavalry · militia · garrison · corps · unit · force

protection

shield

Handheld defensive armor

guardWatchful defensive attention
bracerForearm guard or tonic
vambraceForearm armor piece

gauntlet · mail · padding · plating · aegis

equip

supply

Furnish or stock

furnishSupply or equip
provideSupply or make available
outfitSet of clothes worn together

prepare · fortify · strengthen · provision · gear · weapons · munitions · reinforce · mobilize · ready

letterform

stem

Plant's central axis

strokeSudden brain blood blockage
crossbarHorizontal bar between uprights
ascenderOne moving upward

descender · serif · terminal · vertex · counter · bowl · ear · tail · spur · finial

arm