Yes, sails is a Scrabble word!

Verb

1. Traverse or travel on (a body of water)

2. Move with sweeping, effortless, gliding motions

3. Travel on water propelled by wind

4. Travel on water propelled by wind or by other means

Noun

1. A large piece of fabric (usually canvas fabric) by means of which wind is used to propel a sailing vessel

2. An ocean trip taken for pleasure

3. Any structure that resembles a sail