žilav

1. (of meat) stringy; tough
   Meso je bilo žilavo i nismo ga pojeli. — The meat was stringy and we didn't finish it.
2. (of a person, body) sinewy; wiry
   Deda je mršav, ali žilav i jak. — Grandpa is thin, but wiry and strong.
3. tough; resilient; tenacious
   Ova biljka je žilava i raste svuda. — This plant is hardy and grows everywhere.
   Protivnik je bio žilav do samog kraja. — The opponent stayed tenacious right to the end.
4. (of materials) tough
   Hrastovo drvo je žilavo i teško se lomi. — Oak wood is tough and hard to break.