1. harrow (device for breaking up soil)

2. portcullis (gate in the form of a grating)

3. spike strip, road spikes, traffic spikes

4. grate, grill (especially to block large objects floating down a river)

5. candlestick, candelabrum (with a triangular base and spikes to hold large candles)

6. stage lighting instrument, luminaire that disperses light over a stage

7. portcullis (heraldry)