noun
also pin·guay ˈpēŋ(ˌ)gwā, ˈpiŋ-
( -s )
Etymology: Spanish pingüe fat, from Latin pinguis; akin to Greek pimelē lard — more at fat
: a perennial glandular herb ( Actinea richardsoni ) of the family Compositae of the southwestern United States yielding an inferior rubber and causing poisoning of livestock