die Rückenlehne
Translation
backrest, back of a chair
Examples
Die Rückenlehne dieses Stuhls ist bequem.
The backrest of this chair is comfortable.
Man kann die Rückenlehne nach hinten klappen.
You can fold the backrest backward.
Grammar Patterns
to have/possess ((sth.)) Most chairs have a backrest.
to lean against ((sth.)) He leaned against the backrest.
Similar Words
der Stuhl (the chair), die Sitzfläche (the seat)
Etymology
Composed of 'Rücken' (back) and 'Lehne' (support, from 'lehnen' - to lean). Literally 'back support'.
Memory Tips
Think of it as the part of a chair you 'lean' your 'back' against.