吱吱嘎嘎

zīzīgāgā
(onom.) creaking and grating

CEDICT

onomatopoeic

Entry Composition

1 吱 zī (onom.) chirp; squeak; creak
2 吱嘎 zhīgā
  1. (onom.) creak
  2. crunch
3 嘎 gā (onom.) short but loud sound