纫针

紉針
rènzhēn
to thread a needle

CEDICT

to thread a needle

Wiktionary

将线的一头通过针眼，引申为缝製衣物

維基詞典

Entry Composition

1 纫 rèn
  1. to thread (a needle)
  2. (bound form) to sew; to stitch
  3. (literary) very grateful
=2 针 zhēn
  1. needle
  2. pin
  3. injection
  4. stitch

classifiers: 根, 支
=2 针 zhēn variant of 针 zhēn, needle

Related entries

引线穿针 yǐnxiànchuānzhēn
  1. to thread a needle
  2. (fig.) to act as a go-between
穿针 chuānzhēn to thread a needle
我的手抖得太厉害，没法穿针了。

My hands were shaking too much to thread the needle.

Source: Tatoeba

穿针走线 chuānzhēnzǒuxiàn to thread a needle