Open English Wordnet
Nouns
(n)strain(physics) deformation of a physical body under the action of applied forces (n)stress, straindifficulty that causes worry or emotional tension“she endured the stresses and strains of life”,
“he presided over the economy during the period of the greatest stress and danger” (R.J.Samuelson) (n)strain, mental strain, nervous strain(psychology) nervousness resulting from mental stress“his responsibilities were a constant strain”,
“the mental strain of staying alert hour after hour was too much for him” (n)breed, strain, stocka special variety of domesticated animals within a species“he experimented on a particular breed of white rats”,
“he created a new strain of sheep” (n)form, variant, strain, var.(biology) a group of organisms within a species that differ in trivial ways from similar groups“a new strain of microorganisms” (n)straininjury to a muscle (often caused by overuse); results in swelling and pain (n)tenor, strainthe general meaning or substance of an utterance“although I disagreed with him, I could follow the tenor of his argument” (n)song, strainthe act of singing“with a shout and a song they marched up to the gates” Verbs
(v)strain, extenduse to the utmost; exert vigorously or to full capacity“He really extended himself when he climbed Kilimanjaro”,
“Don't strain your mind too much” (v)sift, sieve, strainseparate by passing through a sieve or other straining device to separate out coarser elements“sift the flour” (v)tense, strain, tense upcause to be tense and uneasy or nervous or anxious“he got a phone call from his lawyer that tensed him up” (v)strain, tensebecome stretched or tense or taut“the bodybuilder's neck muscles tensed”,
“the rope strained when the weight was attached” (v)puree, strainrub through a strainer or process in an electric blender“puree the vegetables for the baby” (v)deform, distort, strainalter the shape of (something) by stress“His body was deformed by leprosy”