burr
rebarba

C.Ss.R.
...Most Holy Redeemer (

CD-R
Compact Disc Recordable

large
to get large(r) / to grow large(r)

liquid
consoante líquida (r, l)

r
r

R
rabbi

R & B
rhythm and blues

R & D
research and development

R-boat
caça-minas alemão

R. of O.
Reserve of Officers

rhotacism
rotacismo

riding
she gave up riding

roll
rolo

sound
rumor

three
rule of three