(n.) Earth flax, or mountain flax; a soft silky variety of asbestus.

act drop amianthus asbestos board asbestos curtain backdrop batten border cloth coulisse counterweight curtain curtain board cyclorama decor drop drop curtain earth flax fire break fire curtain fire line fire resistance fire retardant fire wall fireproofing flat flipper hanging mountain flax rag scene scenery screen side scene stage screw tab tableau teaser tormentor transformation transformation scene wing wingcut woodcut