Definition of fusses:
(n) :
(countable or uncountable) Excessive activity, worry, bother, or talk about something.
(n) :
A complaint or noise; a scene.
(v) :
(intransitive) To be very worried or excited about something, often too much.
(v) :
(intransitive) To fiddle; fidget; wiggle, or adjust
(v) :
(transitive) To disturb (a person)
(v) :
(intransitive, US, especially of babies) To cry or be ill-humoured.