taru-adjective, adverb taking the 'to' particle
Archaic mimetic word describing the clear, light ringing sound of jewels or metal objects striking each other. Used in classical or literary contexts.
彼女の歩くたびに、かんざしが玲玲と鳴った。
Every time she walked, her ornamental hairpin tinkled.
古い詩には、玲玲たる玉の音とある。
In an old poem, there is a phrase 'the tinkling sound of jewels'.