From natural wonders like Yellowstone to man-made treasures like the Space Needle, the U.S. isn't called America the Beautiful for nothing. Here is the most iconic landmark in every US state.
Si /si/ [1 syll.] as a name for boys. Si's name origin is Hebrew, and Si means to hear, listen; reputation. Si is an alternate spelling of Simon (Hebrew). Compare last name Sei.
Wiktionary(0.00 / 0 votes)Rate this definition: 1  si(Noun) A syllable used in solfu00E8ge to represent the seventh note of a major scale. 2  Si(ProperNoun) A diminutive of the male given name Simon.