D defs.my
Entry 1 sense Webster, 1913

Rhotacism

· Rho·ta·cism · IPA /ˈɹoʊ.tə.sɪ.zəm/
01 n. An oversounding, or a misuse, of the letter r; specifically (Phylol.), the tendency, exhibited in the Indo-European languages, to change s …
  1. 1.
    An oversounding, or a misuse, of the letter r; specifically (Phylol.), the tendency, exhibited in the Indo-European languages, to change s to r, as wese to were.(Phylol.)