inquilino
tenant
in-
in, inside
+
quill
pen (archaic)
Inquilino means tenant and can be remembered as someone who lives in0 a place and signs a lease with a quill1 (an old-fashioned pen).
noun
- tenantA person who rents and occupies land, a building, or other property owned by anotherEl inquilino paga el alquiler cada mes. // The tenant pays rent every month.