gutus (less correctly guttus), i, m. [gutta],
a narrow-necked vessel , flask , cruet , from which liquids (wine, oil, ointments, etc.) are poured by drops: qui vinum dabant, ut minutatim funderent, a guttis gutum appellarunt, Varr. L. L. 5, § 124 Müll.: faginus, Plin. 16, 38, 73, § 185; Gell. 17, 8, 5; Juv. 3, 263; 11, 158; Mart. 14, 52 in lemm. : cum paterā gutus, Hor. S. 1, 6, 118.
gūtus (guttus) ī, m a narrow-necked flask, cruet, oil-flask, H., Iu. ...
An Elementary Latin Dictionary