trilling

verb

1. 1

   Also a form of trillpresent participle and gerund of trill

noun

1. 1

   The production of a trill sound.

   It was pretty close quarters, but I had conversed with her at such length during the nest-building time, that she knew my voice and soon began to answer me in low trillings — trillings that could scarcely be heard — and turn her head to look at me in a friendly way.

   During the singing act these wing surfaces are moved rapidly on each other, producing the familiar strident trillings of midsummer.

noun

1. 1

   A compound crystal consisting of three individuals.

   Diametrically opposed rays of these stellate groups are of the same optical orientation and the twins are, therefore, trillings ( fig. 29 ).

   Chrysoberyl is orthorhombic in symmetry. Like many orthorhombic minerals, it readily forms an intergrowth with two other individual crystals to make trillings with six sides or, at least, V-shaped twins.

   In the embryonic stage, pseudohexagonal trillings resemble those of the post-embryonic stage (Figure 2D,E), and are 1 to 3 μm in diameter.

2. 2

   obsoleteOne of three offspring born at the same birth; a triplet.

   Every 67th lying-in woman has twins, every 5333rd has trillings, and only every 150,000th has fourlings.

   this breed is prominent for its remarkable fecundity and yield of milk; as a rule, this goat litters once a year and drops 2 kids; occasionally trillings and fourlings.

   About twins and trillings.

Forms

plural

trillings