Rudiment (n.) That which is unformed or undeveloped; the principle which lies at the bottom of any development; an unfinished beginning.

Rudiment (n.) Hence, an element or first principle of any art or science; a beginning of any knowledge; a first step.

Rudiment (n.) An imperfect organ or part, or one which is never developed.

Rudiment (v. t.) To furnish with first principles or rules; to insrtuct in the rudiments.