Apium nodiflorum (synonym Helosciadium nodiflorum), a flowering plant native to western Europe, the leaves somewhat resembling those of watercress.

simple past tense and past participle of fool about

simple past tense and past participle of act a fool

(transitive) To prank on April Fool's Day.

(transitive) To cause (someone) to seem foolish.

A person who lives an admirably holy but eccentric life, at odds with conventional lifestyles.

One who knowingly makes a decision or takes action that is to his/her own disadvantage.

(chiefly Eastern Orthodoxy) A person, often associated with gifts of prophecy and insight, who publicly acts as if mad or stupid, but whose madness is seen as concealing an inner sanctity for the purpose of self-humiliation.

(archaic, intransitive) To act foolishly.

simple past tense and past participle of April-fool