The Tocharian A word kärk-
Word kärk-
Meaning to bind, to tie
See also Tocharian B: kärk- ‘bind’

Other words that might be of interest
añcwāṣi ‘iron’, amok ‘art, skill’, aräṃ ‘appearance, form’, āk- ‘to lead, to drive’, āśant ‘leader, charioteer’, upāy ‘tool, instrument’, kañcaṃ ‘golden’, kärkṣiṃ ‘manacle, chain’, kälā- ‘to lead, to bring’, ku- ‘to pour’, kota- ‘to split’, nkiñc ‘silver’, wles ‘work, effort, service’, tukri ‘clay’