Bal·sas 
(bôlsəs, bäl-)
(bôlsəs, bäl-) A river flowing about 725 km (450 mi) from south-central Mexico to the Pacific Ocean.
- methylergonovine
- methyl ethyl ketone
- methylic
- methyl isocyanate
- methyl methacrylate
- methylnaphthalene
- methylphenidate
- methylprednisolone
- methyl salicylate
- methyltestosterone
- metical
- meticulosity
- meticulous
- meticulously
- meticulousness
- Metis
- metoclopramide
- Metonic cycle
- metonym
- metonymic
- metonymical
- metonymically
- metonymy
- metoo
- me-too