sink

/sɪŋk/ v [I/T] (past tense sank /sæŋk/ or sunk /sʌŋk/, past participle sunk /sʌŋk/) (FALL)

Definition

› to fall or move to a lower level: [I] The sun sank slowly below the horizon. [I] Exhausted after the race, she sank to the ground. [I] My feet sink into the sand with every step. [I] Gasoline prices sank last year. [I] Relations between the countries have sunk to a new low. › To sink a ball is to hit it into a hole, as in golf and pool, or throw it through a hoop (= ring with a net) in basketball. sink their teeth into › People or animals who sink their teeth into something bite hard: I sank my teeth into the sandwich.

(Definition of sink v (FALL) from the Cambridge Academic Content Dictionary © Cambridge University Press)