Synonym: defend, empower, equip, fortify, weapon. Antonym: disarm. Similar words: farm, farmer, armed, charm, warmth, warm up, harmony. Meaning: [ɑːm] 
n. 1. a human limb; technically the part of the superior limb between the shoulder and the elbow but commonly used to refer to the whole superior limb 2. any instrument or instrumentality used in fighting or hunting 3. an administrative division of some larger or more complex organization 4. any projection that is thought to resemble a human arm 5. the part of an armchair or sofa that supports the elbow and forearm of a seated person 6. the part of a garment that is attached at the armhole and that provides a cloth covering for the arm. v. 1. prepare oneself for a military confrontation 2. supply with arms.
n. 1. a human limb; technically the part of the superior limb between the shoulder and the elbow but commonly used to refer to the whole superior limb 2. any instrument or instrumentality used in fighting or hunting 3. an administrative division of some larger or more complex organization 4. any projection that is thought to resemble a human arm 5. the part of an armchair or sofa that supports the elbow and forearm of a seated person 6. the part of a garment that is attached at the armhole and that provides a cloth covering for the arm. v. 1. prepare oneself for a military confrontation 2. supply with arms. 
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151. The improved trade figures are a much-needed shot in the arm for the economy.
152. Margaret took me to one side, holding my arm in a gentle caress.
153. The sailor had a bird tattooed on his right arm.
154. He was settled cosily in the corner with an arm round Lynda.