(d) To make more frequent; as, to thicken blows.

THICKEN
Thick"en, v. i.

Defn: To become thick. "Thy luster thickens when he shines by." Shak.
The press of people thickens to the court. Dryden.
The combat thickens, like the storm that flies. Dryden.

THICKENING
Thick"en*ing, n.

Defn: Something put into a liquid or mass to make it thicker.

THICKET
Thick"et, n. Etym: [AS. . See Thick, a.]

Defn: A wood or a collection of trees, shrubs, etc., closely set; as, a ram caught in a thicket. Gen. xxii. 13.

THICKHEAD
Thick"head`, n.

1. A thick-headed or stupid person. [Colloq.]

2. (Zoöl.)