2. a means of telling time (relative to one of the three meals a day)
3. The 3rd most important thing to a grunt.
2. Pvt: Hey Sarge, what time is it?
Sgt: It's about half hour till dinner chow.
3. After the good private cleaned his weapon and changed his socks, he scored some chow.
*"but its still a good high"
-"oh no doubt!, but with the right fingers it could be much better."