1. To distribute some substance over the entirety of something or some area. In this usage, a noun or pronoun is used between "spread" and "all over." Once your icing is done, spread it all over the top and sides of the cake. We'll need to spread manure all over the field to keep the crops healthy.

2. To move over the entirety or majority of some area; to be distributed or dispersed The plague spread all over the region, killing millions of people in its wake. Military forces began spreading all over the city in a bid to reclaim it from the insurgents.

3. Of information, to disseminate over the entirety or majority of some area or place. News of the CEO's affair spread all over the office in a matter of hours. Rumors are spreading all over the country about a possible breakdown of the central government.

4. To disseminate information over the entirety or majority of some area or place. In this usage, a noun or pronoun is used between "spread" and "all over." She's been spreading gossip all over town to discredit her rival. Horse-mounted messengers were sent to spread the king's announcement all over the region.