BT Šab 136a(41) :ועבדו להו עיגלא תילתא ביממא דשבעא‏ : they prepared a three-year old calf for them on the seventh day
See the entire entry for ˁbd vb. to make, act, do

BT Šab 136a(41) :ועבדו להו עיגלא תילתא ביממא דשבעא‏ : they prepared a three-year old calf for them on the seventh day
See the entire entry for tleṯ, tu/iltā n.m. three years old