Sū'mach

} [Fr. sumac, sumach, Pr. sumac, simac, Sp. zumaque, Pg. sumagre, It. sommaco, sommacco, Ger. sumach, from Ar. summāk, from samaka, to be high, tall, or long.] [Written also shumac.]

1Sense 1. (Bot.) A plant or shrub of the genus Rhus, of many species, some of which are used in tanning, some in dyeing, and some in medicine.

2Sense 2. The powdered leaves, peduncles, and young branches, of certain species of the sumac plant, used in tanning and dyeing.