⇨ fly baker; fly bravoverb to experience the bleed period of the menstrual cycle. In the phonetic alphabet from 1941–56 'baker' was given for 'B', from 1956 to date 'bravo' is used; in naval signalling to fly the flag representing 'B' means 'I am taking on, carrying or discharging dangerous goods'; a large red flag is flown US, 1999