Ystolcian, v. to keep butting
Ystor, n. a bulk; a store, a stock; a quantity
Ystoraeth, n. store, plenty
Ystordy, n. a storehouse, a warehouse
Ystordyn, n. trigger, in bowling, a mark to jump from
Ystori, v. to cover with resin
Ystorio, v. to store up
Ystorm, n. a tempest, a storm
Ystormus, a. tempestuous
Ystrad, n. a flat, a vale, a dale