Across

1. 1Weight-to-height figure on a health chart, for short
2. 4Shape-shifting single-celled critters
3. 8Prone to breaking things, perhaps
4. 9Segment of a play
5. 10Messenger molecule in protein synthesis
6. 11More briny
7. 131994 Jim Carrey comedy with a magical green face
8. 14Tonic's partner

Down

1. 1Illegally copied, like some liquor?
2. 2Director Brooks or actor Gibson
3. 3Of the peninsula holding Spain and Portugal
4. 4Pirate's cry to stop
5. 5Minor prophet of the Old Testament
6. 6Boleyn and Hathaway, for two
7. 7Bare and grim, or a 'Game of Thrones' house
8. 12Overshare warning, in a text