To give an untrue testimony; to lie despite one's oath e.g. in court.

(linguistics, uncommon) A word in a language bearing a deceptive resemblance to a word in another language, and at least one meaning in common, but not all.

plural of false potato beetle

Leptinotarsa juncta, a beetle found primarily in the Mid-Atlantic and southeastern regions of the United States.

A New World bat, Vampyrum spectrum; spectral bat. / Old World bat of the family Megadermatidae.

Baptisia australis, native to central and eastern North America.

Maianthemum bifolium, the May lily, native from western Europe east to Siberia, China, and Japan

To betray someone; to be disloyal to someone.

A fungal disease of barley caused by Ustilago avenae.

plural of false blue indigo