definition of
grunt

[1] #1 grunt v. issue a grunting, low, animal-like noise; "He grunted his reluctant approval". wn

[2] #2 grunt n. [oink] the short low gruff noise of the kind made by hogs. wn

[3] #3 grunt n. an unskilled or low-ranking soldier or other worker; "infantrymen in Vietnam were called grunts"; "he went from grunt to chairman in six years". wn

[4] #4 grunt n. medium-sized tropical marine food fishes that utter grunting sounds when caught. wn