Webster's Revised Unabridged Dictionary · 1913

Anodyne

Anodyne (an"o*dīn) , adjective

[Latin anodynus, Greek {not transcribed} free from pain, stilling pain; 'an priv. + {not transcribed} pain: compare French anodin.]

Serving to assuage pain; soothing.
The anodyne draught of oblivion. — Burke

“The word [in a medical sense] in chiefly applied to the different preparations of opium, belladonna, hyoscyamus, and lettuce.” Am. Cyc.

Anodyne , noun

[Latin anodynon. See Anodyne, a.]

Any medicine which allays pain, as an opiate or narcotic; anything that soothes disturbed feelings.