Dime-2 A/N: Every lesson has a vocabulary list. Its purpose (here, anyway) is to inform students of the meanings of the words used elsewhere in the lesson. You may already know some of them; the real book repeats words, too.
About the chapter titles: The tag "6½-1" means that this chapter is part of Unit 6½, Lesson 1. The same will apply to the other lessons later.

Vocabulario 6½-1

En el mundo mágico:
el mundo mágico magical world (wizarding world)
la escoba broom, broomstick
encantado(a) enchanted
el encanto/hechizo spell, charm (n.)
la hechicera witch
el hechicero wizard (I used these because brujo(a) had too negative a connotation)
la magia magic (n.)
mágico(a) magical
Nuncamagio(a) Muggle (both adj. and n.; I made it up)
la potencia power
la vara wand

Clases:
clase de defensa contra las artes oscuras DATDA class
clase de encantos/hechizos Charms class
clase de herbologia Herbology class
clase de pociones Potions class
clase de transfiguración Transfiguration class

Verbos:
aprender to learn
borrar to erase
convertirse to become
descubrir to discover
escoger to choose
emitir to emit
golpear to hit
nacer to be born
sentarse to sit, to sit down
significar to mean
usar to use
volar to fly

Palabras y expresiones:
además besides
ambos both
el andén platform
la barrera barrier
¡Bienvenidos! Welcome!
la bola ball
el boticario apothecary
el boleto ticket
el bolígrafo ballpoint pen
la callejuela alley
la campanilla de puerta doorbell
celoso(a) jealous
la chimenea chimney
la chispa spark
el dependiente salesclerk
el deporte sport
la diferencia difference
el director director, principal (of a school)
dudoso(a) doubtful
el equipo team
el gobierno government
interesado(a) interested
orgulloso(a) proud
el pergamino parchment
la pluma quill (pen)
por ejemplo for example
el regalo gift, present
la semejanza similarity
sin without
la sorpresa surprise
Ven. Come. Come here.
la verdad truth