enow: enough
stoup: in this case, a flagon or beaker for drink
croft: a small rented farm (especially one in Scotland) comprising a plot of arable land attached to a house and with a right of pasturage held in common with other such farms
cote: a shed or coop for small domestic animals and especially pigeons
grange: granary or barn
syenite: a coarse-grained gray igneous rock composed mainly of alkali feldspar and ferromagnesian minerals such as hornblende. While it can be found in red color (where it is rich in potassium), in this form it would more properly be called episyenite. Small miss by the author. Trying to be too fancy for his own good ;-P
fust: in this context, the shaft of a column or pilaster
heliotrope: a mineral aggregate sometimes known as bloodstone or ematille. It is a cryptocrystalline mixture of quartz that occurs mostly as jasper (opaque) or sometimes as chalcedony (translucent). The classic bloodstone is opaque green jasper with red inclusions of hematite.
lees: dregs; the sediment of a liquor during fermentation and aging
terebinth: a small southern European tree of the cashew family that was formerly a source of turpentine
tenebrous: dark; shadowy or obscure
concamerated: arched; vaulted
addorsed: set back to back
carmine: a vivid crimson color, historically made from cochineal
miter: in this context, a liturgical headdress typically worn by bishops and abbots
natron: a hydrous native sodium carbonate used in ancient times in embalming, in ceramic pastes, and as a cleansing agent. Specifically: a naturally occurring mixture of sodium carbonate decahydrate (Na2CO3·10H2O, a kind of soda ash) and around 17% sodium bicarbonate (also called baking soda, NaHCO3) along with small quantities of sodium chloride and sodium sulfate
friable: easily crumbled
holocryptic: incapable of being deciphered
pertinacious: holding firmly to a course of action
The picture used is by Clark Ashton Smith himself, used as an illustration in Weird Tales for this story.
To follow along: http://www.eldritchdark.com/writings/short-stories/241/the-weaver-in-the-vault
Well, we don't get many of these types of cosmic horror stories from Smith. It was written in 1934, and he had known Lovecraft going back to 1922, so plenty of time for that horror influence to rub off on him. Just interesting more of his stories aren't more of this sort.
