Definify.com

Webster 1913 Edition

Noun.

A place where rubbish, dung, etc., are laid or deposited.

[Obs.]

B. Jonson.

Smithfield was a

laystall

of all ordure and filth.

Bacon.

A place where milch cows are kept, or cattle on the way to market are lodged.

[Obs.]

Noun.

[lay and stall.] A heap of dung, or a place where dung is laid.

laystall ‎(plural laystalls)

(obsolete) A place where rubbish, dung, etc., are laid or deposited.

(Can we find and add a quotation of Ben Jonson to this entry?)

Smithfield was a laystall of all ordure and filth. — Bacon.
(obsolete) A place where milk-giving cows are kept, or cattle on the way to market are lodged.