a.

1. 三重的

n.

1. 三人一組
2. 【音】三拍子

n.

1. (Triplex) Brit. trademark toughened or laminated safety glass, used especially for car windows.
2. N. Amer. a building divided into three self-contained residences.
3. Biochemistry  a triple-stranded polynucleotide molecule.

v.