(Irregular preterit, past participle: ground).
1. To dance by rotating the pelvis in an erotically suggestive way.
2. To reduce to small pieces or particles by pounding or abrading; SYN. mash, crunch, bray, comminute.

1. To become sharp or sharper
2. To give a point to; SYN. taper, point.
3. To make more acute; as of one's senses; SYN. heighten.
4. To make sharp or sharper, of images and sounds
5. To make sharp or sharper, as of knives.
6. To make sharp or sharper
7. To raise the pitch of (musical notes).