...I have never seen an orifice, and it is scarcely possible that the tree can yield so much... 
David Livingstone 「Missionary Travels and Researches in South Africa」
...The women have the extraordinary custom of piercing the upper lip, and gradually enlarging the orifice till a shell can be inserted...
W.H.G. Kingston 「Great African Travellers」
...This muscle determines the narrowing and closure of thepalpebral orifice...
Édouard Cuyer 「Artistic Anatomy of Animals」
...Neatly crisscrossed, inside each of the Champion'sears, was a succession of adhesive-plasterstrips cut thin and running from tip to orifice...
Albert Payson Terhune 「Lad: A Dog」
...The external orifice or furrow of the nostrils was also twice as long...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...Itaccumulates upon the few hairs that fringe the urinal orifice, andsometimes almost impedes the passage of the water...
Dinks, Mayhew, and Hutchinson 「The Dog」
...The orifice being small in these, andthe depth considerable, the sides are apt to adhere irregularly, andprevent the free escape of matter, which is certain to collect at thebottom...
Ambrose Blacklock 「A Treatise on Sheep:」
...It is here that the orifice must be made, thethumb of the left hand being held against the vein, so as to preventthe flow of blood towards the heart, will make it rise...
Ambrose Blacklock 「A Treatise on Sheep:」
...Should even this fail of success, the sheath may be slitopen from its orifice back in the median line below until the offending mattercan be reached and removed...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...Behind this orifice is a distinct pouch, in which this unctuous matter isliable to accumulate when the penis is habitually drawn back...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
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