Entry 2 senses · 2 variants Webster, 1913 Meros · Me·ros · IPA n. n. 01 n. The plain surface between the channels of a triglyph. 1. The plain surface between the channels of a triglyph.(Arch.) 02 n. The proximal segment of the hind limb; the thigh. 1. The proximal segment of the hind limb; the thigh.(Anat.)