A small bird, the blackcap titmouse (Parus
atricapillus), of North America; -- named from its note.
Not loyal; not true to a sovereign or lawful superior, or to the government under which one lives; false where allegiance is due; faithless; as, a subject disloyal to the king; a husband disloyal to his wife. Without a thought disloyal. Mrs. Browning. Syn. -- Disobedient; faithless; untrue;...