Learner's definition of FETCH
to go after and bring back (someone or something)
Wait here while I fetch [=get] the doctor.
Please fetch me a drink. = Please fetch a drink for me.
If you throw the ball the dog will fetch it.
to be sold for (an amount of money)
fetch and carry
to do the kind of jobs that servants do for someone
chiefly British, informal
to reach or come to a place, condition, or situation that was not planned or expected