Roh-
raw
Rohr
tube
pipe
gun barrel
roh
raw
uncooked
crude
untreated
rough
rude
Stroh-
straw
Drohn
drone
Rohöl
crude oil
Röhre
pipe
tube
froh
glad
Rohbau
fabric
Roheit
savageness
röhren
bray
Drohne
drone
Stroh
straw
drohen
threaten
Dröhnen
boom
dröhnen
boom
resound
Lötrohr
blowpipe
Meerohr
abalone
Rohware
greenware
bedroht
threatened