LSJ
τά, (cf. λάανα) always in pl., trivet or stand for a pot, Ar. Pax 893 (ubi v. Sch.), Diocl.Com. 8.
night-stool, Hp. Fist. 9, Cratin. 49 (cj. Mein. for λαχάνοις), Pherecr. 88, Eup. 224, Ar. Fr. 462; also in sg., like Lat. lasanum, Hp. Superf. 8, AP 11.74.8 (Nicarch.).
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)