| SAL | a member of the tribe of Franks who settled in the Netherlands in the 4th century AD |
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| SAL | the code of laws of the Salian Franks and other German tribes |
| SAL | two genera of trees or shrubs having hairy catkins: Salix |
| SAL | coextensive with the family Salicaceae |
| SAL | glassworts |
| SAL | fleshy maritime plant having fleshy stems with rudimentary scalelike leaves and small spikes of minute flowers |
| SAL | a salt of salicylic acid (included in several commonly used drugs) |
| SAL | poisoning caused by the excessive ingestion of salicylates (usually aspirin) |
| SAL | a white crystalline substance with a bitter aftertaste |
| SAL | the state of being salient |
| SAL | the state of being salient |
| SAL | (military) the part of the line of battle that projects closest to the enemy |