Alternative form of arm in arm

(of two or more people) With arms linked together; with arms around each other's shoulder or waist. / (figuratively) In collusion, in concert (with someone).

Abbreviation of Armenian.

Initialism of accelerated reply mail (a service of the United States Postal Service) / Initialism of adjustable rate mortgage.

(computing) Initialism of Acorn RISC Machine or Advanced RISC Machine.

(law) Abbreviation of Armenia. / Abbreviation of Armenian. / Abbreviation of Aramaic. / Abbreviation of Armagh.

(transitive) To supply with armour or (later especially) weapons.

The portion of the upper human appendage, from the shoulder to the wrist and sometimes including the hand. / (anatomy) The extended portion of the upper limb, from the shoulder to the elbow.

(obsolete) To take by the arm; to take up in one's arms.

(UK dialectal, chiefly Scotland) Poor; lacking in riches or wealth. / (UK dialectal, chiefly Scotland) To be pitied; pitiful; wretched.