Musical definitions

[reward4615]

Can anybody tell me what the musical definitions are for the following terms?
METRE.
PULSE.
OSTINATO.

[Metz]

Just googled these

Metre is the grouping of beats by means of regular stress patterns

Ostinato is a short melody or pattern that is constantly repeated, usually in the same part at the same pitch

Pulse is that the beat?

[Sport]

Good answers from Metz.
The metre is usually descriptive of hymn tunes ie the number of syllables per line.
Pulse is probably best understood as the beat (like a heart-beat).
I think that ostinato can be a repeated rhythmic pattern or a short melodic line repeated.