A circular passageway found in Chinese, Japanese, and Bermudian architecture.

(rare) Prejudice against bearded people. / (rare, dated, nonce word) The period during which one has a beard. / (rare, dated, nonce word) Support for beards; a favourable opinion of beards.

(of a container) That can be used inside an autoclave without damage.

A stain consisting of a solution of carmine in acetic acid.