biplane

n early type of aeroplane with two sets of wings, one above the other 双翼飞机. Cf 参看 monoplane.

biodegradable, biographer, biographic, -ical, biography, biological, biological control, biological warfare (also germ warfare), biologically, biologist, biology, biomedical, bionic, bionics, biopsy, biorhythm, bioscope, biotechnology, bipartisan, bipartite, biped, birch, bird, bird of paradise, bird of passage, bird of prey, bird sanctuary, bird-bath, bird-song, bird-table, bird-watcher, birdbrained, birdcage wire, birdie, birdlime (also lime), birds, birdseed, biretta, Birmingham, birth, birth certificate,