overstrain I. \| ̷ ̷ ̷ ̷| ̷ ̷\verb Etymology:over (I) + strain transitive verb 1.: to subject to excessive strain 2.: to load until the stress exceeds the elastic limit intransitive verb : to subject oneself to excessive strain II. \ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷, ˌ ̷ ̷ ̷ ̷ˈ ̷ ̷\noun : excessive mental or physical strain : a condition resulting from overstraining < a serious bout of overstrain and overwork — A.L.Rowse >