Kathleen from Hebron, Connecticut, is curious about the term hashtag. She associates it with the symbol #, which she calls a pound sign. When that symbol, also known as a hash mark, doublecross, hatch mark, octothorpe, or number sign, is appended to...
hashtag n.— «What does it mean when somebody puts a number sign before a word in an online post? That’s called a hashtag, for the hash mark preceding the word (right, yet another name for the symbol we also call the number sign and the pound sign)...
