Meaning

noun thickening of tissue in the motor tracts of the lateral columns and anterior horns of the spinal cord; results in progressive muscle atrophy that starts in the limbs

noun a silvery ductile metallic element found primarily in bauxite

noun a state in the southeastern United States on the Gulf of Mexico; one of the Confederate states during the American Civil War

originFrom Middle English als, variant of alse, alsa, also, from Old English eallswā, from Proto-West Germanic *allswā. More at also.

Etymology from Wiktionary, CC BY-SA 3.0