The Collaborative International Dictionary
Basihyal
Basihyal \Ba`si*hy"al\, a. [Basi- + Gr. [upsilon] (the letter ``upsilon''); from the shape.] (Anat.) Noting two small bones, forming the body of the inverted hyoid arch.
Wiktionary
basihyal
n. (context anatomy English) Either of two small bones that form the body of the inverted hyoid arch.