BT BB 167a(17) :אזל \מחקיה לככיה"שקלינהו לאיגריה" דבית‏ : he went and erased the tooth (var. removed the roof) of the beth
See the entire entry for ˀeggār, ˀeggārā n.m. wall; roof

BT BB 167a(17) :אזל מחקיה לככיה דבית ושוייה ופרדיסא‏ : he proceeded to remove the upper portions of the bet (in the word 'in the garden') and turned it into "and the garden"
See the entire entry for by#2 n.f. bet, second letter

BT BB 167a(17) :ככיה דבית‏ : the horizontal portions of the beth
See the entire entry for kaḵ, kakkā n.m. molar