C Share definition Flag The third letter in the alphabet.. duh.. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z now I know my abcs dad will be impressed when he comes back with the milk. C by iitsthatweirddictionarykid November 8, 2019 0 0 Get merch Get the C mug. Buy Now — $32.95 See more merch