ATTU'NE, verb intransitive [of ad and tune. See tone and Tune.] 1. to make musical. Vernal airs attune the trembling leaves. 2. To tune, or put in tune; to adjust one sound to another; to make accordant; as, to attune the voice to a harp.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI