(~s)
1.
Grapes are small green or dark purple fruit which grow in bunches. Grapes can be eaten raw, used for making wine, or dried.
N-COUNT
2.
If you describe someone’s attitude as sour ~s, you mean that they say something is worthless or undesirable because they want it themselves but cannot have it.
These accusations have been going on for some time now, but it is just sour ~s.
PHRASE: usu v-link PHR, PHR after v