Fend is no longer used very much, but here are two places you might see it (it generally means to ward off, to repel, to keep something away from oneself):

Because he no longer has his big brother to protect him, I guess he will have to fend for himself.

Although we tried to enjoy the picnic, we had to fend off a lot of hungry mosquitos.

The present tense of "fend" is "fends." For example, "He fends off criticism."

I/you/we/they fend. He/she/it fends.

Fend off, mate!

Peter Fend was born in 1950.