Exact historical dictionary sense
Arms in Webster's 1913 dictionary
The 1913 record labels arms as noun. Its source-bounded etymology and selected historical definition appear below.
[OE. armes, F. arme, pl. armes, fr. L. arma, pl., arms, orig. fittings, akin to armus shoulder, and E. arm. See Arm, n.]
Cross-verified historical senseIn Webster's Revised Unabridged Dictionary (1913), "arms" is labeled noun. Its etymology is recorded as: "[OE. armes, F. arme, pl. armes, fr. L. arma, pl., arms, orig. fittings, akin to armus shoulder, and E. arm. See Arm, n.]" The selected historical definition says: "Instruments or weapons of offense or defense."