Entry 5 senses · 4 variants Webster, 1913 Kin /(kĭn)/ · IPA /kɪn/ n. n. n. a. 01 n. A primitive Chinese instrument of the cittern kind, with from five to twenty-five silken strings. 1. A primitive Chinese instrument of the cittern kind, with from five to twenty-five silken strings.(Mus.) 02 n. Relationship, consanguinity, or affinity; connection by birth or marriage; kindred; near connection or alliance, as of those having common … 1. Relationship, consanguinity, or affinity; connection by birth or marriage; kindred; near connection or alliance, as of those having common descent. 2. Relatives; persons of the same family or race. “The father, mother, and the kin beside.” — Dryden. “You are of kin, and so a friend to their persons.” — Bacon. 03 n. The unit velocity in the C. G. S. system -- a velocity of one centimeter per second. 1. The unit velocity in the C. G. S. system -- a velocity of one centimeter per second.(Physics) 04 a. Of the same nature or kind; kinder. 1. Of the same nature or kind; kinder.