I. busing
present part of bus
II. bus·ing ˈbəsiŋ noun
( -s )
Etymology: bus (I) + -ing
: an assembly of bus bars
III. bus·ing noun
also bus·sing ˈbəsiŋ
( -s )
Etymology: from gerund of bus (II)
: the act of transporting by bus ; specifically : the transporting of children to a school outside their residential area as a means of establishing racial balance in the school