STOCKY
compact, heavyset, stocky, thick, thickset
(adjective) having a short and solid form or stature; “a wrestler of compact build”; “he was tall and heavyset”; “stocky legs”; “a thickset young man”
Source: WordNet® 3.1
Etymology
Adjective
stocky (comparative stockier, superlative stockiest)
(of a person or an animal) Sturdy; solidly built; heavy and compact.
Source: Wiktionary
Stock"y, a. Etym: [From Stock.]
1. Short and thick; thick rather than tall or corpulent. Addison.
Stocky, twisted, hunchback stems. Mrs. H. H. Jackson.
2. Headstrong. [Prov. Eng.] G. Eliot.
Source: Webster’s Unabridged Dictionary 1913 Edition