1. (Arch.)

Defn: A small molding, like the astragal, but smaller; a bead.

2. (Zoöl)

Defn: One of the minute bodies seen in the divided nucleoli of some
Infusoria after conjugation.

BAGWIG
Bag"wig", n.

Defn: A wig, in use in the 18th century, with the hair at the back of the head in a bag.

BAGWORM
Bag"worm`, n. (Zoöl.)

Defn: One of several lepidopterous insects which construct, in the
larval state, a baglike case which they carry about for protection.
One species (Platoeceticus Gloveri) feeds on the orange tree. See
Basket worm.

BAH
Bah, interj.

Defn: An exclamation expressive of extreme contempt. Twenty-five years ago the vile ejaculation, Bah! was utterly unknown to the English public. De Quincey.