verb/enfɾasˈkaɾ/
to bottle, (put in a bottle); to be deeply engaged or absorbed in (work, etc.)
“En resolución, él se enfrascó tanto en su letura, que se le pasaban las noches leyendo de claro en claro, y los días de turbio en turbio; y así, del poco dormir y del mucho leer, se le secó el celebro de manera que vino a perder el juicio.” — In short, he became so absorbed in his books that he spent his nights from sunset to sunrise, and his days from dawn to dark, poring over them; and what with little sleep and much reading his brains got so dry that he lost his wits.
From en- + frasco + -ar.