(electrical engineering) Able to operate on two different electrical frequencies. / (radio communications) Able to receive and operate on two different radio frequencies.

(simile) Very dull or boring.

(slang, dated) To take a risk.

plural of dust-collector

(humorous) An ornamental item or objet d'art, viewed as having no other purpose than to collect dust.

(of a person, potentially offensive) Having mixed racial parentage or ancestry.

(education, psychology) Twice-exceptional.

Synonym of buck fever

Alternative form of hunt where the ducks are

(Scotland) Said in response to a person shrugging their shoulders.