a. Like a prude; very formal, precise, or reserved; affectedly severe in virtue;
A formal lecture, spoke with prudish face. Garrick. [ 1913 Webster ]
adv. In a prudish manner. [ 1913 Webster ]
a. Somewhat rude. Foote. [ 1913 Webster ]
n. pl. [ NL., fr. L. rudis rough. ] (Paleon.) An extinct order or suborder of bivalve mollusks characteristic of the Cretaceous period; -- called also