Initialism of Sealed Lead-Acid Battery. / Initialism of Second Language Acquisition. / Initialism of Service-Level Agreement. / Initialism of Specific Leaf Area.

plural of SLA

(uncountable, geology) A fine-grained homogeneous sedimentary rock composed of clay or volcanic ash which has been metamorphosed so that it cleaves easily into thin layers.

Having the bluish-grey/gray colour of slate.

(transitive) To cover with slate. / (transitive, chiefly Britain) To criticise harshly. / (transitive, chiefly US) To schedule. / (transitive, chiefly US) To anticipate or strongly expect.

Language outside of conventional usage and in the informal register. / Language that is unique to a particular profession or subject; jargon.

(transitive, dated) To vocally abuse, or shout at.

(archaic) simple past tense of sling

(UK, dialect) Any long, narrow piece of land; a promontory.

(UK, obsolete) A fetter worn on the leg by a convict. / (UK, obsolete, slang) A counterfeit weight or measure. / (UK, obsolete, slang) A travelling show, or one of its performances.