Ysgolp, n. a spar
Ysgor, n. a rampart, a bulwark
Ysgorfa, n. a place of defence
Ysgori, v. to encircle, to hem
Ysgoriad, n. an entrenching
Ysgornio, v. to scorn, slight
Ysgoth, n. a purge, a voidance
Ysgothfa, n. privy-house
Ysgrad, n. what is rigid or stiff
Ysgraell, Ysgraen, n. the sea swallow