Defn: A white variety of amphibole, or hornblende, occurring in long, bladelike crystals, and coarsely fibrous masses.

TREMOLO Tre"mo*lo, n. Etym: [It. Cf. Tremulous.] (Mus.) (a) The rapid reiteration of tones without any apparent cessation, so as to produce a tremulous effect. (b) A certain contrivance in an organ, which causes the notes to sound with rapid pulses or beats, producing a tremulous effect; — called also tremolant, and tremulant.

TREMOR
Tre"mor, n. Etym: [L., from tremere to tremble. See Tremble, v.]

Defn: A trembling; a shivering or shaking; a quivering or vibratory motion; as, the tremor of a person who is weak, infirm, or old. He fell into an universal tremor of all his joints. Harvey.

TREMULANT; TREMULENT
Trem"u*lant, Trem"u*lent, a.

Defn: Tremulous; trembling; shaking. [R.] " With tremulent white rod." Carlyle.

TREMULOUS
Trem"u*lous, a. Etym: [L. tremulus, fr. tremere to tremble. See
Tremble.]

1. Shaking; shivering; quivering; as, a tremulous limb; a tremulous motion of the hand or the lips; the tremulous leaf of the poplar.

2. Affected with fear or timidity; trembling.
The tender, tremulous Christian. Dr. H. More.
— Trem"u*lous*ly, adv.
— Trem"u*lous*ness, n.

TREN
Tren, n. Etym: [See Treen wooden.]