КЛЕЙ _|_ GLUE / KLEY [klʲeɪ̯] 

Hint with an alternative definition: it is the yellow glue, add it to objects in a case of a collision or crack, lay them close & clamp or it is a clay-like paste to glue layers of clothes together.

Hints with translation + consonant words (by sounds or letters): imagine a love glue that can ally & yoke enemies

Hint with a mirror: like a yelk/yolk

Russian pro-tip: его лей для скрепления вещей

Mental visualization: К (crack) + Л (leaked glue) + E (other crack) + Й (tube of glue)