What does 埋头 (mái tóu) mean in English?

Card 1715HSK Level 41715/3571
CARD1715
PROGRESS48%
埋头
埋頭
mái tóu
immerse oneself in

Reveal: Click/Space/Enter/↑↓/w/s/j/kNavigate: ←→/h/l/a/d