Illustrated Companion to the Latin Dictionary/Hypotrachelium

This article incorporates text from a publication now in the public domain: Rich, Anthony (1849). The illustrated companion to the Latin dictionary, and Greek lexicon. p. vi. OCLC 894670115. https://archive.org/details/illustratedcompa00rich. 

HYPOTRACHE'LIUM (ὑπροτραχήλιον). The uppermost part of the shaft of a column, where it is of the smallest diameter, immediately under the neck of the capital. Vitruv. iii. 3. 12. Id. iv. 7. 3.