Basic theory on river betting question

[PLOlover]

Ok I just was betting a straight the whole way, out of position, and then the board pairs the river against my lone opponent, I checked and somewhat stupidly called his pot sized bet, which he made with the bottom set turned full house on the river.

Should I bet out half the pot or maybe 1/3 of the pot to prevent him potting it? Is this known as a "blocking bet"?

Thanks.