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A movable, articulated organ of sensation, attached to the heads of insects and Crustacea. There are two in the former, and usually four in the latter. They are used as organs of touch, and in some species of Crustacea the cavity of the ear is situated near the basal joint. In insects, they are popularly called horns, and also feelers. The term in also applied to similar organs on the heads of other arthropods and of annelids.

A movable, articulated organ of sensation, attached to the heads of insects and Crustacea. There are two in the former, and usually four in the latter. They are used as organs of touch, and in some species of Crustacea the cavity of the ear is situated near the basal joint. In insects, they are popularly called horns, and also feelers. The term in also applied to similar organs on the heads of other arthropods and of annelids.

One of the jointed horns or feelers upon the heads of insects; a framework of wires supported in the air for sending and receiving the electric waves of wireless telegraphy.

A feeler, one of the two lateral appendages projecting forward from the anterior segment of the head of an arthropod.

One of the feelers of an insect.

A jointed feeler on the head of an insect or crustacean.