犁骨
Vomer \Vo"mer\, n. [L., a plowshare.] (Anat.) (a) A bone, or one of a pair of bones, beneath the ethmoid region of the skull, forming a part a part of the partition between the nostrils in man and other mammals. (b) The pygostyle.
vomer n : thin trapezoidal bone of the skull forming the posterior and inferior parts of the nasal septum