颤音的

[ adj ]
uttered with a trill
<adj.all>
she used rolling r's as in Spanish

Trill \Trill\, v. t. [imp. & p. p. {Trilled}; p. pr. & vb. n.
{Trilling}.] [It. trillare; probably of imitative origin.]
To impart the quality of a trill to; to utter as, or with, a
trill; as, to trill the r; to trill a note.

The sober-suited songstress trills her lay. --Thomson.