Alternative spelling of sine qua non.

Alternative spelling of folksinger, someone who sings folk music.

A quotation mark, as in She said, 'Go ahead'. / An apostrophe, as in Let's do it.

plural of Singapore dollar

The official currency of Singapore.

plural of single entendre

(humorous) A phrase that has a single, often bawdy, meaning and is lacking in subtlety or cleverness.

Alternative spelling of nulla pœna sine lege

(law) The principle that a person shall receive no punishment unless he has committed an offence as explicitly defined in a law.

A message sent like a telegram, but delivered to the recipient by a performer who sings the message. / The performer who sings such a message.