BT Yom 29a(5) :סימניך טינא <א>בר טין‏ : your mnemonic is clay on top of clay
See the entire entry for ˀbr prep. on top of

BT Yom 29a(5) :מגמר בעתיקא קשי מבחדתא‏ : learning in something old is harder than in something new
See the entire entry for ḥḏeṯ adj. new

BT Yom 29a(5) :מגמר בעתיקא קשי מבחדתא‏ : learning in something old [i.e. restoring forgotten knowledge] is more difficult than (learning) in something new [i.e. previously unlearned knowledge]
See the entire entry for ˁattīq adj. old