The details in this grid are:
Lock Type
The type of the resource that is currently locked (Database, Table, Page, Row, Extent, etc. Note that AllocUnit, HoBT, Metadata, and Object are displayed for SQL Server 2005 instances only).
Mode
The kind of lock being applied to the resource (Shared, Exclusive, Update, IntentShared, IntentExclusive, etc.).
Status
The status of the lock (Blocked, Blocking, or blank (Granted)).
The Status column shows whether the locks have been granted to the session, or whether they are currently blocked and waiting on another session.
Database
The database being used by the current process.
Count
The number of locks of the type specified in the Lock Type column against the database specified in the Database column from the SPID specified in the SPID column.
Index
The index being used by the current process (if any).
Object Name
The object that is currently locked.