:After a bit of research, I think 2S is referring to the deuce of spades and 2H is referring to the deuce of hearts, which are sometimes added and given the highest rank in variations ("Railroad Euchre"). I think this means that a lay down hand should be a pair of jacks and any 3 cards of trump suit which is unbeatable if the jacks are played first. I'm not sure if this is right, though, as I've only played euchre a couple times. I'm going to try and re-write that section, but if someone more familiar with hearts can look it over and post a reply here that would be appreciated.