aufweiten
bell out
bulge out
bulge
cold work
enlarge
expand by cold forming
expand
flare
open out
open up
ream
stretch
to bell out
to bell
to bulge out
to bulge
to cold work
to dilate
to enlarge
to expand by cold forming
to expand
to flare
to inflate
to open out
to open up
to ream
to stretch
to widen
widen