1. [17C+] the cheeks; often in phr. red in the gills or pink in the gills, embarrassed.
2. [19C] the corners of a stand-up shirt-collar.
3. [mid–late 19C] the mouth.
[mid-19C] (UK Und.) to one’s gain, to one’s advantage.
[late 19C–1900s] to eat heartily and substantially.
[late 19C+] feeling and looking sick, esp. from an excess of alcohol.
[1960s] (US campus) drunk.
[mid-19C–1900s] angry, choleric.
[mid-19C+] absolutely, completely.
1. [mid-19C+] frightened.
2. [mid-19C+] (also pale about/around/round the gills) feeling and looking sick, esp. from an excess of alcohol.