A female chicken in its first egg laying year between 20 weeks and 18 months old. A young layer. Sometimes termed grower in US. (RAMIRAN Glossary of terms on livestock and manure management 2011)
Dome: An uplift or anticlinal structure, either circular or elliptical in outline, in which the rocks dip gently away in all directions. (Glossary of Landform and Geologic Terms https://www.nrcs.usda.gov)