cave
1. cave \'ka-v\ n [ME, fr. OF, fr. L cava, fr. cavus hollow; akin to ON hu-nnX cub, Gk kyein to be pregnant, koilos hollow, Skt s'vayati he swells 1: a natural underground chamber open to the surface Brit 2: a secession or a group of seceders from a political party 2. cave vt : to form a cave in or under : HOLLOW, UNDERMINE 3. cave \'ka-v\ vb [prob. alter. of calve] 1: to fall in or down esp. from being undermined 2: to cease to resist : SUBMIT - usu. used with in : to cause to fall or collapse - usu. used with in
Webster's English Dictionary