A set is three-of-a-kind formed when you hold a pocket pair and flop matches it.
Explanation. For example, holding 8‑8 and the flop comes 8‑5‑2 gives you a set. The term distinguishes from trips: set implies hidden pair with concealed strength. Sets are powerful hands that usually win big pots if played properly. Recognizing set potential helps with preflop hand selection and implied odds calculation.