骨のずいまでひえた。

bone; frame; outline; core; backbone; spirit; fortitude; laborious; troublesome; difficult

indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question

youth; freshness; purity; luster (lustre); beauty; good omen; Sweden; Switzerland

until (a time); till; to; up to; to (a place); as far as; to (an extent); up to; so far as; even; only; merely

to grow cold (from room temperature, e.g. in refrigerator); to get chilly; to cool down