This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Having or consisting of bristles; bristly: a setaceous moth.

adj. Resembling bristles or a bristle: setaceous whiskers.

adj. of, relating to, or resembling a bristle or bristles; bristly

adj. Set with, or consisting of, bristles; bristly.

adj. Bristelike in form or texture

In anatomy and zoology:

Bristly; setiform; having the character of a seta, chæta, or bristle.

Bristling; setiferous or setigerous; setose; provided with bristles or stiff, stout hairs.

In botany, bristle-shaped; having the character of setæ: as, a setaceous leaf or leaflet.

adj. having or covered with protective barbs or quills or spines or thorns or setae etc.

"Many moths are christened only in Latin, but the lovely vernacular names, Joe said, date from the seventeenth century: one species that flocked to our trap that night was the relatively common setaceous hebrew character, so named to denote the hieroglyphic on its forewing."

armed   

palpi   

bristly    bristle