The series of bodily changes that occur in the female of most mammals from one period of estrus to another. The estrous cycle usually takes place during a specific period known as the breeding season, which ensures that the young are born at a time when the chance of survival is greatest.
ear-to-ear. It's about smiling. Ear-to-ear smile or grin is when you have a very broad and generous smile. Such a smile when each corner of your mouth is by each of your ears. Explain to me why you don't have an ear-to-ear grin right now.
uk â /lÉËf/ us â /lÃ¦f/. A2 to smile while making sounds with your voice that show you think something is funny or you are happy: They laughed at her jokes. I couldn't stop laughing. I said he'd have to give a talk and he laughed nervously. She's so funny - she really makes me laugh. It's very rare that a book is so good you actually laugh out loud. It was so funny, I burst out laughing (= laughed suddenly and loudly). I laughed till I cried.