puedo lavársela

I can wash it for him/her

→ poder
phrase Rare #44,537
I can wash it for him/her Puedo means “I can,” while lavársela combines lavar (“to wash”) with the pronouns se (“for him, her, or you formally”) and la (“it,” referring to a feminine noun).
SP: Puedo lavársela antes de que llegue.
EN: I can wash it for her before she arrives.