英和和英

the condition of being in a hand

skill―dexterity―mastery

to twist muscle of one's body

a single arm

an arm

the forearm

to exercise one's talent―show one's talent

to be masterly―smart

one arm

to come to blows

He has improved in his ability.

a support for the arm

to bare an arm

One burns―itches―to do something.

to do one's utmost―strive to the utmost―strain every nerve

brachial power

link arms

bind the arms of

Pull back your arms!

to make someone carry something in his/her arms

slender arms

both arms

of or relating to an arm

the shoulder-joint

his encircling arms

His fingers are itching to do it.

One's fingers are itching to do it

a sweep of his arm

to bare one's arms―turn up one's sleeves―roll up one's sleeves

Let go of my arm!