αὐλών

A. hollow between hills or banks, defile, glen, h.Merc. 95, Hdt. 7.128,129, Ar.l.c. (lyr.); expld. as οἱ στενοὶ καὶ ἐπιμήκεις ποταμοί Sch. Il. Oxy. 221 xiv 19.

2. channel, trench, A. Fr. 167A, Hdt. 2.100,127, X. An. 2.3.10.

3. strait, Μαιωτικός A. Pr. 731; πόντιαι αὐ. sea-straits, channels, S. Tr. 100 (lyr.).

4. pipe, conduit, Pl. Ti. 79a; metaph. of windpipe or duct, Arist. PA 664a27, Gal. UP 4.14.

5. furrow in an elephant's hide, Aret. SD 2.13.