fold

In a sentence

• Dobla la servilleta antes de ponerla sobre la mesa.

  Fold the napkin before placing it on the table.

  Here, 'dobla' is the imperative form of the verb 'doblar,' meaning 'fold' in its physical sense — to bend or crease an object such as fabric or paper.

• Tengo que doblar la esquina para llegar a la tienda.

  I need to turn the corner to reach the store.

  In this sentence, 'doblar' means 'to turn'; while it can be related to folding, it is used figuratively to describe changing direction at an intersection or corner.

• Esta inversión podría doblar nuestro ingreso mensual.

  This investment could double our monthly income.

  Here, 'doblar' is used to mean 'double,' referring to increasing an amount to twice as much, showcasing its mathematical application.