head-hugging cap
nounUK /ˈhɛdˌhʌɡɪŋ kæp/
US /ˈhɛdˌhʌɡɪŋ kæp/
A cap that fits tightly and stays close to your head.
He wore a head-hugging cap while riding his bike.
OTHER MEANINGS
2. A close-fitting swim cap worn to keep hair dry.
She pulled on her head-hugging cap before jumping in the pool.
3. A tight protective cap worn under a helmet.
The cyclist wore a head-hugging cap beneath his helmet.
4. A snug cap worn for warmth in cold weather.
Grandpa put on a head-hugging cap to walk in the snow.