From expend +‎ -er.

expender (plural expenders)

1. One who, or that which, expends.

Borrowed from Latin expendere.

• IPA^(key): /eɡspenˈdeɾ/ [eɣ̞s.pẽn̪ˈd̪eɾ]
• Rhymes: -eɾ
• Syllabification: ex‧pen‧der

expender (first-person singular present expendo, first-person singular preterite expendí, past participle expendido)

1. to sell (retail), to handle, deal in

   Synonym: vender

2. to sell on commission
3. to disburse, spend, lay out (money)

   Synonym: gastar

4. (law) to circulate or pass (counterfeit money)

• “expender”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8, Royal Spanish Academy [Spanish: Real Academia Española], 2024 December 10