Upper-Intermediate English (2) • NOUNS • 'C'

noun [C ] B2 informal (UK also cigarette end) • synonyms: stub, filter tip, discarded cigarette • flick/discard/stub out cigarette butt; smoldering/burnt/used butt • freq in AmE: 6/10

the small remaining part of a cigarette after it has been smoked; typically discarded and considered litter

noun [C ] B2 • synonyms: device, gadget, invention • patterns: build/invent/use a contraption; fix/tinker with a contraption • collocations: strange/noisy/clever contraption; homemade/mechanical contraption • freq in AmE: 5/10

a device or machine that looks strange or complicated, often improvised or oddly constructed; sometimes used humorously or critically