máquina, f., machine.
maquinaria, f., machinery.
mar, m. and f., sea.
Marco, m., Mark (proper noun).
marcharse, to go away, leave ([section 37]).
marinero, m., sailor.
martes, m., Tuesday.
martillo, m., hammer.
más, more; no—— que, just ([section 24]).
mayor, m. and f., older, greater.