[R] how to delete specific rows in a data frame where the first column matches any string from a list

[Laura Rodriguez Murillo]

Hi,

I'm new in the mailing list but I would appreciate if you could help
me with this:
I have a big matrix from where I need to delete specific rows. The
second entry on these rows to delete should match any string within a
list (other file with just one column).
Thank you so much!

Laura