"reír entre dientes" in English

to laugh- to laugh at

between- amid- betwixt- amidst- among- among- amongst- amongst- mid- midst- into

come in

come in- enter

serration- cogs- ivories- teeth

gaff

to grow teeth- to indent- to jag- to teethe

to enter- to go in- to walk in- to break in- to burst in- to come on- to come through- to get in- to get in- to get in- to keyboard- to keypunch- to penetrate- to input- to log in- to come on- to bring in- to take in- to come in- to log on- to begin- to start- to tackle