技 is a bound form (b.f.) — it cannot stand alone as an independent word in modern Chinese. You will almost always see it as the first or second element in compound nouns such as 技术 (jìshù, technology/skill), 技能 (jìnéng, skill/ability), 技巧 (jìqiǎo, technique), and 技艺 (jìyì, craftsmanship). The core meaning is 'skill' or 'ability', but you must pair it with another morpheme to use it in a sentence.