Without seasons. / (fashion) Not restricted to a particular season, but suitable for any. / Without relish or seasoning; insipid.

Something, such as a glove or other pledge, thrown down as a challenge to combat (now usually figurative). / (obsolete) Something valuable deposited as a guarantee or pledge; security, ransom.

simple past tense and past participle of halve

(obsolete, rare) Threatened by mortal danger.