soft spot is a noun meaning "a place of especial vulnerability". It carries 3 recorded senses.
a place of especial vulnerability
a sentimental affection
“she had a soft spot for her youngest son”
any membranous gap between the bones of the cranium in an infant or fetus
Definitions, synonyms and semantic relations for soft spot come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.