Any three; the 3d, 3c, 3s, or the 3h.
EXAMPLE: "I had Ac-2c and the flop came up 4c-Qc-5h. I called a raise since I could catch any club to make the nut flush or a trey to make a straight."
APPLIES TO: Online and Land-based Venues
A pair of threes, especially as pocket cards.
EXAMPLE: "I called with a pair of treys and quickly folded when I missed the flop."
RELATED TERMS: Pocket Pair