- armarm1 [ärm]n.[ME < OE earm; akin to L armus, Goth arms, OHG arm: see ART1]1.a) an upper limb of the human bodyb) in anatomy, the part of the upper limb between the shoulder and the elbowc) in nontechnical use, the part of the upper limb between the shoulder and the wrist2. anything resembling this in structure or function; esp.,a) the forelimb of some vertebrate animalsb) any limb of an invertebrate animal3. anything commonly in contact with the human arm; esp.,a) a sleeve of a garmentb) a support for the arm on a chair, sofa, etc.4. anything thought of as armlike, esp. in being attached or connected to something larger [an arm of the sea, a yardarm, the arm of a balance, an arm of the government, etc.]5. power to seize, control, etc. [the long arm of the law ]☆ 6. Baseball Football ability to pitch or throw a ball——————an arm and a lega very great amount of money [it cost me an arm and a leg]——————arm in armwith arms interlocked, as two persons walking together——————at arm's lengthat a distance emotionally so as to avoid intimacy, the appearance of favoritism, etc.——————☆ put the arm on Slang1. to arrest or restrain2. to request a loan or donation from——————with open armsin a warm and friendly wayarmless [ärmlis]adj.armlikeadj.arm2 [ärm]n.[ME < OFr armes, pl. < L arma, implements, weapons; akin to armus, shoulder, upper arm (see ART1): for semantic development see ARM1, sense 3]1. any instrument used in fighting; weapon usually used in pl.: see also SMALL ARMS2. [pl.] warfare; fighting3. [pl.]a) COAT OF ARMSb) insignia of countries, corporations, etc.4. [a merging with ARM1 (sense 4)] any combatant branch of the military forcesvt.[ME armen < OFr armer < L armare, to arm < arma: see the n.]1. to provide with weapons, tools, etc.2. to provide with something that protects or fortifies3. to prepare to attack or to meet attack [reporters armed with questions]4. to make ready or equip with parts needed for operation [to arm a missile with a warhead]vi.1. to equip oneself with weapons, as in preparing for war2. to prepare for any struggleSYN.- FURNISH——————bear arms1. to carry or be equipped with weapons2. to serve as a combatant in the armed forces——————take up arms1. to go to war or rise in rebellion2. to enter a dispute——————to arms!get ready to fight!——————under armsequipped with weapons; ready for war——————up in arms1. prepared to fight2. indignant
English World dictionary. V. Neufeldt. 2014.