dy.bu BY* bu-letteral

letteral for ð (eth)

See CLL 17.5 (https://lojban.github.io/cll/17/5/). Thorn (þ) is ty.bu. The glottal stop inside this word is mandatory (as in y'y.bu 'aitch', ky.bu 'cue' and vy.bu 'double-u').