Letters that make rub out
o, b, r, t, u are letters that make 'rub out'
grub out is a word created by adding a letter to 'rub out'
1 possible definitions for 'rub out'
Under this definition, rub out is a verb and has the following properties:
sponge, scratch out, cut out are types of 'rub out'.
eraser, erasure, expunging, expunction are derivatives of 'rub out'.
rub is an entailment to 'rub out'.