Sentence:  The presence of <WSD>eponychium</WSD> (also called “foal slippers”) on the feet (Figure 172-3) is indicative that the foal has not yet stood. 
Meaning of the word marked with <WSD> tags:  The protective capsule that surrounds the hoof of foetuses and neonates of hoofed animals, which disappears soon after birth, but remnants of which remain as part of the permanent hoof.