nounAinmfhocal1letterBbthe letter Ban litir Bthe 'b' is missingtá an 'b' ar lár2musicceolnote, keyBcan you play it in B?an féidir leat é a sheinm in B?the key of Bgléas Ban air in B flatfonn in B maolB majormórghléas BB minormionghléas BB sharpB géar3position in list, sequence, ranking etcBAppendix BAguisín B4educationoideachasgrade, markBshe got a B in sciencefuair sí B san eolaíocht5chemistryceimicsymbol for boronB6medicineleigheasblood groupBblood group Bfuilghrúpa BB negativeB diúltachB positiveB deimhneachFor usage examples see A