Glomus, glomi, m. g. & Glomus, glómeris, pen. cor. n. g. Plin. A bottome of threade.
Lewis and Short: Latin dictionary
glŏmus (glōm-, Lucr. 1, 360; v. Lachm.), ĕris, n. [for glob-mus, kindr. with globus], a ball or clue of yarn, thread, etc. (very rare). I. In gen.: lanae, Lucr. 1, 360 (v. Lachm. ad h. l.); Hor. Ep. 1, 13, 14: lini, Plin. 36, 13, 19, 91: staminis albi, Scrib. Comp. 142.—II. In partic.: glomus in sacris crustulum cymbi figura ex oleo coctum appellatur, Paul. ex Fest. p. 98 Müll. (in Cato and Varro globus).