鯨脂 is read as げいし (geishi) and means blubber.
げいし
geishi
くじら
whale (Cetacea spp.)
げいにく
whale meat
げいこつせいぶつぐんしゅう
whale-fall community
いさなとり
whaling
くじらとり
げいいんばしょく
drinking like a fish and eating like a horse
げいのうゆ
spermaceti
じゅし
resin
ごうせいじゅし
plastics
どうでんせいじゅし
conductive resin
かんこうせいじゅし
photosensitive resin
ねつかそせいじゅし
thermoplastic resin